Cummins vent tube leak 88K subscribers Subscribe The Cummins 4373355 Vent Tube is a critical component in the maintenance and operation of commercial truck systems. But after I replaced the O-ring mine still leaked but I found out that the vent tube was badly corroded due to it leaking for some time, so I ended up purchasing a new vent tube and it hasn't leaked since. The blowby tube discharge appears to be clear. The one that is leaking is In this video I discover an oil leak on top of my 2003 Ram 2500 Cummins turbo diesel's valve cover. 11 votes, 33 comments. 3 liter diesel iRV2. I was thinking maybe I have too much crankcase pressure possibly due to vacuum pump leaking but I'm going to put on some breathers on a couple of valve covers. What is the typical cause of this issue and how can it be fixed? Nov 15, 2010 · Fuel leaking I have a 2000 2500 (2nd gen engine) with similar leaking problems. Jan 16, 2017 · The truck does leak a fair amount from the timing cover seal. Its design and function are essential for maintaining system pressure, ensuring efficient operation, and protecting against potential damage. 5 dodge 2500 5speed. Shop XDP. After I drive, and park it leaves a spot of oil thats about 1 1/2 the size a of quarter. While I was in there i went ahead and changed the transfer case fluid as well. This missed maintenance piece can result in axle or output shaft seal leaks in the axle tubes or t case output shaft. The weirdest thing is it didnt smell like gear oil. I have 97 12v Cummins 2wd automatic i notice that my engine was missing a lot of oil almost no oil at all, so I change the oil filter and added new oil to the engine I went on a 200 mile trip came back it was n Dec 4, 2011 · Usually the piston rings will damage the block making it necessary to machine cylinders oversized and buy matching pistons, adding quite a bit of expense to rebuild. 7 Cummins often faces premature CCV filter clogging and oil leaks around the oil filter seal and firewall area. We checked his vacuum lines and they Jul 12, 2010 · 1998. The crankcase vent mod that a lot of us did will Oct 18, 2010 · It seems pretty severe, and is uniform across all of the covers. I have changed the transmission fluid (used the correct Dodge fluid) and cleaned up the underside of the truck and the Aug 31, 2014 · Ve pump leaking from the vent tube again Jump to Latest 6. So my question is, whats to stop the oil from just pushing its way out the pvc setup you made that worms its way over the engine? Apr 14, 2017 · I installed my twins a couple of weeks ago and not had any issues with leaks or blowby. Page 3 of 3 Apr 13, 2023 · I used this. 3. 2000 Dodge RAM 2500, 5. Jan 29, 2019 · As the title says I have a small coolant leak that I have not been able to trace for the last several days. Jan 20, 2020 · Hey guys I’m looking at buying an 04 truck that has some oil on the metal valve cover coming from the crankcase breather. Basic Concepts of Vent Tubes Vent tubes, including the Cummins 4323232, are designed to facilitate air release or intake within a system, aiding in pressure equalization and fluid management. 2 days ago · What does the crankcase vent filter do inside the engine? Here's a definitive guide that explains everything you need to know. Engine is leaking oil out of breather tube, top of dipstick, last two valve cover gaskets. Dec 28, 2013 · Yes I was able to fix the leak. I just did an oil change last week, and the oil appeared fine. 7 Cummins Engine. Symptom: equipment experiencing visible engine vapor at crankcase breather vent Jul 12, 2021 · If there is oil coming out of your breather tube, it does not automatically mean that there is a problem with your breather tube, and you have to replace your breather tube immediately. Now it's back. Is External Lubricating Oil Leak from Crankcase Breather Tube Warranty Statement The information in this document has no effect on present warranty coverage or repair practices, nor does it authorize TRP or Campaign actions. Its recently Aug 31, 2022 · Cummins L9 Equipment Technical Service BulletinsTSB Number: TSB220213-110820 NHTSA Number: 10227535 TSB Date: November 8, 2022 Date Added to File: December 12, 2022 Failing Component: Equipment Summary: This technical service bulletin was issued for visible engine vapor observed at crankcase breather vent tube. . And going onto my oil pan. Anyone experienced any transfer case leaks like this? I called the dealer and left a message with their service department. If it is soaking or drip [ping oil wet it is more likely a leak than the vent hose. 4 inch straight pipe. Apr 4, 2008 · Owners of 1998 - 2002 (BR) Ram Trucks equipped with the 24-valve Cummins diesel engine may experience engine oil overflow from the front crankcase breather when the vehicle is operated off-road on an extreme downhill grade (37. I noticed my air box with a bunch of oil in it and it was running through the mottor fouling the plugs and even as bad as coming out the exhaust. There is little to no smoke coming … Read More Jun 18, 2024 · I have a 2016 RAM 3500 6. and i also noticed my transmission started Common issues that may arise with the Cummins 3688252 Vent Tube include blockages, leaks, or damage to the tube itself. Runs fine no loss of mpg. , Steering stabilizer. 9L 6. Regulated Hose correctly installed with no damage Regulated Hose not secured to battery cables Remote Fill undamaged, leak test, CNG Diamond with pressure decal Remote Fill safety interlock switch undamaged and operational Vent tubes undamaged and secured to Chassis/Fuel System High Pressure Vent Hose undamaged and secured Vent Cap undamaged Apr 24, 2011 · I'm getting excessive blow by from the vent tube. If all the vacuum operated items (cruise, heater vents, 4WD and exhaust brake if you have one) are working there isn't any air being pumped into the crankcase. Truck has been leaking oil… Mar 21, 2025 · Vent tube has no smoke but does have some oil residue in it. This will put full pressure on the injectors if you have one leaking it will spray out of the body of the injector. Gases and oil get blown into it, oil is baffled/separated to drop off, gas goes out the Vent Tube, and oil drains back to the block through our infamous Oil Drain Tube and its associated tiny check valve. 2014 RAM 3500 (Aisin) 3. com Google Files Vendors Registry Blogs FAQ Members List iRV2 Groups Calendar Mark Forums Read Log in Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. Oil dripping from the driver-side vent tube and wetness around the oil fill cap usually indicates a leaking valve cover gasket or a faulty PCV valve. 9l Cummins Front engine cover (timing cover) has a round canister with a hose coming out and down. 9 24V iRV2. 70622 3901249 3907740 3907741 3909669 3912072 3930827 3918616 3934496 (3934865) (3935113) Clip Screw, Hex Flange Head Cap Clamp, Spring Hose Clip Tube, Breather Screw, Self Tapping Metal Hose, Plain Hose, Plain Clamp, Hose Seal, Rectangular Ring Connection, Vent May 1, 2010 · Trying to determine cause of high bottom end pressure. Replace the damaged drain tube on your Dodge Ram 5. Removing oil filler cap or dipstick this engine pushes out a lot of oil smoke and gets worse as it warms up. Sep 8, 2020 · Another couple of things, the turbos have been known to leak boost into the crankcase on medium sized trucks, and I had one with valve guides causing the crankcase pressure. The CCV is effectively a valve-cover-integrated catch-can. I sprung a leak from this tube and am 2hrs from Dec 21, 2014 · I have a 98. 7L 24 Valve Cummins Firepunk Engine Lift Bracket. Aug 10, 2011 · Well, after thinking about how to solve the common problem these 5. The local Dodge mechanics are puzzled. This is crucial for preventing issues such as overheating, leaks, or system failures in a truck’s system 1. Feb 5, 2020 · Fill to top and crawl under it and look. Mar 11, 2002 · I have a 99 model dodge truck that suddenly started blowing oil out the blowby tube. I can see the fittings on the top of the tank. I was told there is suppose to be a catch can at the bottom end of the hose but, there Aug 5, 2013 · The output tail-shaft seal on the transfer case has been leaking almost since day one. :confused013: I hear this isnt too uncommon either, but just wondering how anyone else deals with this. Last oil change was roughly 3,000 miles ago with Delo 15w40. This ensures that the fuel system operates within its designed parameters, leading to consistent fuel delivery and engine performance. Other than those two things I don’t know how to check vacuum pressure. While it was running I looked under the truck and the fluid was running out of the breather tube again. Over full and thinned oil will leak a lot easier than good oil. 2005 Dodge 3500 4X4 Automatic Quad Cab Laramie. 17 3500 Laramie CCLB SRW loaded . any idea what this means Jan 2, 1998 · I have a 1998 1/2 dodge 24 val cummins and it is blowing oil out of the vent tube bad. I have heard of mods that re-routes the oil back into the oil pan some how. com today for your truck. I start to replace the crankcase ventilation box but then Oct 5, 2017 · So, first thing first, i have to give a shout out to Rich over @Glacier Diesel Power for helping me out on this one. The law of physics rules that out as the primary source. I am in the process of cleaning it out with some ATF and from some of it leaking out of the filter as it soaks it is very dirty. I assume is dripping while I am driving and I can see the smoke when sitting at a light. Check the Positive Crankcase Ventilation (PCV) valve and breather tube for blockages or wear. Customer: My 5. May 30, 2007 · 1st Gen. But my question is, how does the crankcase vent? Because the two tubes that come off of the valve cover don't have any connection to the crankcase. Anybody know what might cause this? Could it just need a valve adjustment? Thanks, Gary. My low coolant light has only come on briefly for maybe a minute or two at a 24v Cummins Crankcase Vent Relocation & Tool Box Repair on my 2001 Ram 3500 Dually 2nd Gen AllThingsBoost 6. I had this leak once before about 25k miles ago. com May 26, 2025 · The most common cause of a coolant leak on the passenger side of a 6. The Cummins 4374002 Vent Tube plays a role in the overall efficiency of the fuel system by allowing for proper ventilation and pressure equalization. Cummins had a campaign years ago for it on some engines. I recognize that some oil out of the tube is fine and I have experienced that up until now. May 13, 2024 · I turned off the truck and the fluid stopped. Jan 14, 2023 · I have been led down the hole of a bad crankcase vent filter. 780,000 MILES. WTF is going on here?? At idle, I can Apr 16, 2020 · Hi, everyone so I have problem and I can’t find anywhere online with the same problem. Noticed today that the part where the heater return line goes into (solid metal) 1 in from the radiator direction and 2 out towards the firewall is leaking. :confused013:Unless I'm mistaken I don't think fuel should be in here or leaking out the vent. This problem just showed up,not a gradual thing. Aug 31, 2016 · NP241DHD transfer case from factory. com Google Before performing any hot work procedure, make sure the fuel system is leak-free by performing a leak test with a suitable leak detection solution. Is there anything else which could cause high crankcase pressure? I really don't want to have to tear apart the motor, I rely on this truck every day! Jul 22, 2024 · There are two gas tank hoses on the driver side. Mar 23, 2017 · Normally, the only time a CCV filter would cause an oil leak, would be if you didn't change it and it got clogged up, not allowing the CC air to vent. I just replaced the seal last weekend from it leaking a little bit. NO WET SPOTS FOUND AROUND THE WATER PUMP AREA. Jeff's '04 LB7 :chevy: Silverado CC/SB (Repower in progress!! Jun 6, 2021 · I've been on phone with cummins and dodge all over the internet all i see is fuel pump block off plate and crank case gear cover but my ccv vent oil drain connects to the block with a metal plate and gasket that has a metal hose going through it crank case vent and oil return i need to replace Dec 11, 2014 · When I got back and checked there were a few drops of oil and noticeable smoke coming from the Crank case vent tube. I have never smelled any diesel in my oil and my level has never gone over full and I have never had any dripping oil sitting in the driveway or other places. Oil Bypass Filter, Fuel Filtration Kit, and 50 Gallon Aux Fuel Tank. On my truck I had a lot of oil on the blow by tube and though I was losing oil from there. Crankcase Breather Tube Broken: Lubricating Oil Leak Warranty Statement The information in this document has no effect on present warranty coverage or repair practices, nor does it authorize TRP or Campaign actions. Here the O-ring part number Mopar Part number 68086261AA & Cummins Part number 5266152 and it should be a green O-ring. Sep 6, 2007 · I'm just throwing my 2 cents in. Oil filter was changed at that exact time as well. I traced the leak to the coolant line that looks like it supplies the transmission heat exchanger on the drivers side of engine. Sep 19, 2016 · Good morning everyone, I bought a new to me 2000 Dodge 2500 with the NV4500 transmission. This, of course, is after checking the cooling lines for tightness. power is great ,oil pressure Jan 26, 2018 · Bigg Also make sure you have no vacuum leaks if you have big vacuum leaks that will contribute to excessive blowby or at least it would seem that way. 04 Dodge 3500 Cummins. The truck runs great but I noticed a thin coating of oil under the truck. Jun 5, 2010 · 01 3500 DRW 2WD. Page 3 of 3 Mar 23, 2010 · Fuel has been leaking from the vent underneath the boost tube on the injection pump. There is no smoke coming from the exhaust, I checked the Jan 25, 2018 · COULDN'T FINE THE LEAK. The inlet is only about 5/16 ID, the vent hose is 3/4 inch ID. Nov 7, 2018 · Pull the valve cover and unplug the pressure valve on the injector pump. Ram - All Topics - Repair leaking fuel pin. Periodically checking the rear differential vent tube on the RAM differentials will ensure proper venting and prevent possible seal leaks. I'm curious about the pros and cons to one of these. Judging by it hanging down someone forgot to bolt it to upper transmission bellhousing bolt. I believe it to be a breather but it drips oil and the fan blows it all over everything. 1996 Ram 2500, 12 Valve Cummins, Extended cab long box, Built 47RE, Triple disc torque converter, custom valve body, added clutches. Doesn't use any oil and I only Jul 14, 2021 · So it appears I have a coolant leak from the back side of the engine. 7 cummins egr delete coolant hose leakingThe coolant hose kept leaking due to only being held in by an O ring. Check your vent tubes occasionally because as you can see here they get clog Dec 18, 2019 · From where does it appear to be leaking? Two main areas are the shift shaft seal and the dipstick tube. 9 24V Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. THEN I HAD NOTTICE RIGHT UNDER THE COOLANT TUBE WAS SOME WET SPOTS. Even with the inlet totally open it can't suck enough air in to pressurize the crankcase that bad. Rouch. I'm wondering what the best solution is. this could be me just nervous about the break-in process but i crawled under my truck today and my front drive shaft was soaked in oil. To the point I am having to add oil periodically. Nov 1, 2020 · I have an 05 Cummins quad cab short bet 4X4 with a 48RE automatic. we drove from Florida to Ky and now the when going down the road a lot of oil is coming out the 4 days ago · Rawze. CONTACTED SINISTER DIESEL FOR SOME NEW O-RING. Or a Dec 5, 2012 · iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Oil leaking out of vent tube on a cummins 8. What I did, was find the vent tube location, which ends up being a small vacuum line from the CAD vacuum harness plug on the switch. I have checked my oil level numerous of times on a level surface with the truck running and in Jan 15, 2025 · Breather/vent tube for transfer case. I started the truck and drove it home real quick. Blow-by from the vent tube suggests worn piston rings or a failing PCV (Positive Crankcase Ventilation) valve, causing pressure buildup and oil migration. Jul 23, 2023 · Alright guys I haven’t heard of anyone having this problem. I have where the smaller tube that is connected to the filler neck is cracked and leaking. Aug 16, 2010 · Easiest way to check the vent is to pull the line off the transfer case and leave it open for a day. 5 24V 2500 Auto Club Cab, Espar D5, 340L Slip Tank, FASS DDRP, Fuel Pressure and EGT Gauges, Frantz bypass oil filter, C. Truck has a little over 4K miles on it. Ruenell front bumper and warn winch, Rancho adj shocks. If anyone knows what causes this leak and how I can fix it I would be A small oil leak from the front vent/breather tube is common due to crankcase pressure buildup. That seemed to fix it. Did you only check the cap off at idle? Check it at the point fluid is coming from the vent. I just hooked up to my trailer (14k) for the first time and I have tons of oil blowing out the crankcase vent tube. 5% or 22° slope/grade). Join the #1 RV Forum Today - It's Totally Free! Feb 12, 2023 · The big question now is. B. But I know for tire the puke bottle is leaking can't really find out abou the other 5. The dealer installed a new rear main seal and I haven't had any problems. the 3rd injection event causes extra carbon buildup in the combustion chamber which results in carbon jacking of the compression rings. 5 24 valve with 160k miles has 4:11 gear w/ 5 speed having issues with excessive oil coming out the blow by valve under load at high rpms only above 70 miles/hr (losses up to 1 gallon in 10 miles!) but does not blow anything out below 65 miles/hr :huh: :help: Aug 19, 2013 · New to forum. What I found, was that while it would not leak when the truck was parked, It would leak while driving or drip one or two times shortly after a drive, and then cease from leaking. Keep us posted as to how it goes, and more importantly what the fix is. (See pic) It is the tube (bare metal colored) directly in front of the yellow transmission dipstick handle that goes into the black painted tube. What could be the problem? High drive pressure? My motor only has about 8k on it. I am having transmission oil spit out of the vent tube at the top of the trans driver side when driving. 2 days ago, i found my coolant leak! it was the EGR delete coolant hose connection. Part 1 If you have fuel leaking from the rubber vent tube on the rear on the injection pump and there is fuel in the well below the AFC diaphragm then your fuel pin is leaking. Nov 3, 2009 · I rerouted my crankcase tube behind the engine two days ago, and yesteday i notice alot of smoke coming out it, and I also noticed oil in my air filter:confused013: is this normal? i check the oil this morning and i dont think Im losing oil. I resealed the vacuum pump,but it's still doing it,oil pressure is lower than normal as well. It seems to be coming from the crank case vent tube. 4K views 8 replies 3 participants last post by tranzman Sep 2, 2014 tranzman Discussion starter Aug 12, 2018 · If it smells of Diesel and is above full you have a lift pump/injection pump leak. I have a different idea for the drain line I'm going to try out, which should allow for better flow and reduce the chances of restriction. even some bolts on oil pan. This is why it is imperitve that you do change this filter at the specified mileage, if not sooner (some change at 32K). it seems to have some crank case The Cummins 5344191 Vent Tube is a critical component in both the fuel and coolant systems of commercial trucks and engines. DID ANYONE HAVE THIS PROBLEM?? Nov 7, 2018 · Hello, My brother has a Rv with a 5. Aug 11, 2005 · And the vent tube I am refering to comes down the right front of the engine and vents just above the skid plate. Its design and features ensure that the system maintains optimal pressure and ventilation, contributing to the overall reliability and performance of the vehicle. By ensuring proper pressure management and ventilation, this part contributes to the efficiency, reliability, and safety of the truck’s systems. I don't know exactly how much oil I am losing (I could strap a jar to the tube to find out), but it's getting progressively worse. I looked under the truck, and it appears the leak is on the passenger side with coolant staining the oil filter and some other parts (pictures attached). Sep 24, 2024 · Hey guys, noticed a fair amount of oil on my oil pan and tranny after a long trip this weekend, initial inspection leads me to believe that it is coming out of the breather tube on the drivers side of the block. Find Coolant Hoses & Pipes and all the other parts you need for your 2007. Apr 19, 2016 · So I've read a lot of things about the 2nd gen crankcase vent filter fixes and haven't really come up with one that I liked. clearly came out of the blow by vent tube. Cleaning or replacing the PCV valve can reduce pressure and oil seepage. Now this thing is leaking profusely when I drive. This is to show you how to replace the o-ring on the fuel pin; The Cummins 5297802 Vent Tube plays a significant role in the efficient operation of commercial truck fuel systems. Oct 2, 2009 · adding TCW3 2 stroke oil to the fuel helps with these 3rd Gen Cummins. ENGINE BUILD IN PROGRESS. There is oil coming out of your breather tube if you have pressure in your crankcase. But could you physically see the oil leaking from the vent? I ask this question because the crankcase vent connects to the airbox throat (snorkel). When I pulled the pin out I could see fuel. 73 4X4 Limited Crew Cab Long Bed DRW. Day time or night I can see the vapor coming out around the truck. It smells like diesel but I didn’t climb under it and rub and sniff it. Depending on whether you have a 2500 or a 3500, you will have different axles and the vent tube locations might be different. About a quart every 5 hrs at cruising. Nov 19, 2021 · The tube shown in your photo is the starter vent tube and should not be plugged. 7L; I need help identifying this part. Likely possibilities are, Vacuum pump seal leak, tappet cover gasket, timing cover gasket, vacuum pump mounding bolts loose. That's all the way over on the other side of the engine. Dec 16, 2016 · Hi, my 01 seems to have excessive crankcase pressure,it blows oil out of breather tube. The thing still sounds and runs normal, EGT and boost are normal, oil pressure and water temp also normal and no abnormal smoke. 2K subscribers Subscribe Jan 2, 2013 · iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Oil leaking out of vent tube on a cummins 8. 9 Cummins and the fuel injector went out and Cummins replaced it. Cummins Oil leak ON TOP Of The Valve Cover? Crankcase Vent Box Trump Can’t Stop Blaming and Bragging, Fox News Has a Grip on Him & We See His "Hellhole" Cities Apr 19, 2016 · So I've read a lot of things about the 2nd gen crankcase vent filter fixes and haven't really come up with one that I liked. I think in the 11 oclock position. Feb 28, 2011 · So I'm been seeing some oil spots on my driveway. It smells like the new oil. there is a plastic blow tube that runs down the side of the engine that blows oil all over the tranny. The crankcase filter simply filters the blow by gases to make sure that they are clean before they are rerouted back into the vehicle’s intake manifold. com Google Mar 30, 2022 · Because it is a critical part for the proper functioning of the Crankcase Vent. Blew thru it and it was clear as well (where does this tube come from?) Apr 15, 2025 · A forum community dedicated to all things Cummins Diesel! Originally founded for owners and enthusiasts of Cummins powered Dodge pickups, the Cummins Forum has expanded to include ALL Cummins Engine applications! Oct 15, 2007 · Even if you have a vent tube extension (which so many of us have) the oil will just relieve itself out the extension. Jamie has a breather kit on his site. If I remember correctly, there is an O ring in the top fitting that can leak. Swapped both the tranny output seal and the transfer case input seal. Second, the length of the air tube run to the radiator and back will create a time lag in turbocharging performance and potentially result in pressure pulses that will impede proper perfor-mance of the engine. Regular oil changes and ensuring proper engine ventilation help prevent excessive oil blow-by and maintain engine health. Any advice/assistance will be greatly appreciated. Crawl under it when running and look for leaks. 9 diesel with a Cummins 5265106 Genuine Crankcase Breather Oil Drain Tube. It is a 2012 ram 2500. it only happens when im driving and it blows the oil all onto my suspension parts and by the fan to the Apr 12, 2016 · If the leak is indeed coming from the crank case vent, then it is either over filled with way too much oil, or the rings are bad and is bypassing a ton of compression. 5-2018 Dodge Ram 2500/3500 with 6. 9 Cummins Oil Leak Crank Case Breather AM PM Mobile Repair 14. This means that you have pressure leaking past your piston rings. do I really want to install another one in factory routing or vent it to atmosphere? Or, just gut the one I have and vent it to atmosphere. It developed a leak from the weep hole between the transmission and the transfer case. I Aug 27, 2024 · Just got home from a 1200 mile trip (no towing) and found this. Mar 17, 2016 · Has anyone rerouted the coolant tube for the egr cooler to not leave the pipe up top? Does it really need to be there anymore? I have the new style with the flex joint, but the pipe now only needs to go to the turbo and not to the head? Any ideas?. It would only leak when the thermostat opened Nov 2, 2010 · The vent tube is pretty good size. The oil cap will also do a little dance. 2015 Ram 3500 (154,400 miles, not deleted). Dec 4, 2008 · oil leak/oil breather? Hi guys I`m really new to diesels but agood mechanic when it comes to gas engines. The Cummins 5335763 Vent Tube is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Jul 26, 2012 · How does a vacuum pump create blow by? My friend just bought a 9712v 4x4 and when driven around town it barely drops oil in the catch can but as soon as you put it on the interstate and cruise for 30 minutes to an hour it will dang near fill up the catch can. 9 24-valve Cummins, which has 165,000 miles on it, has begun to leak engine oil from the crankcase breather tube. Oil leaks Oil leaks are one of the symptoms most commonly associated with a bad crankcase vent filter. 9 Cummins, 4x4, 5-Speed manual transmission. Find your diesel needs at XDP! Apr 16, 2020 · The vacuum pump seal is for oil not air. Jeff's '04 LB7 :chevy: Silverado CC/SB (Repower in progress!! Jun 6, 2021 · I've been on phone with cummins and dodge all over the internet all i see is fuel pump block off plate and crank case gear cover but my ccv vent oil drain connects to the block with a metal plate and gasket that has a metal hose going through it crank case vent and oil return i need to replace Jan 6, 2016 · 1. Apr 28, 2019 · I am in need of the PN# or size of the o-ring that seals the coolant tube connected to the EGR cooler. I took the truck in and come to find out my rear main seal was leaking and some how the oil was collecting on and inside the blow by tube. IIRC, overhaul kit Cummins parts , rings and bearings gasket kit +/-$1500, if you need to oversize probably double that. My truck has about 225,000 miles. Inspect valve cover surfaces for flatness, ensure correct gasket installation, and check PCV valve operation. Sep 30, 2019 · Good evening, I have an issue with the rear output shaft on my transfer case. Dec 13, 2006 · They vent using a PCV system and the turbo pressurizes the oil so that it leaks at all the boots and fills up the intercooler. I had a local shop replace the lift (in tank) fuel pump a few months ago and recently completely filled the fuel tank only to discover fuel leaking out of the top of the tank while at the fueling station. Enough that when i parked the exhaust was smoking from all the oil. Regulated Hose correctly installed with no damage Regulated Hose not secured to battery cables Remote Fill undamaged, leak test, CNG Diamond with pressure decal Remote Fill safety interlock switch undamaged and operational Vent tubes undamaged and secured to Chassis/Fuel System High Pressure Vent Hose undamaged and secured Vent Cap undamaged Nov 22, 2024 · Wondering why oil coming out of crankcase breather? Our guide covers common causes, risks, and repair solutions to protect engines. Mar 26, 2012 · My truck suddenly starting losing oil a couple weeks ago. le chassis or body, ensure the main battery disconnect switch Disconnect the CNG fuel system electrical connector at the rear of the FMM box or at the Agility ECU to prevent damage. Nov 20, 2018 · There's another little black tube that comes back up beside it and goes into the valve cover. It oil makes small drops and stops after a few minutes. I pulled the line off the vac pump & plugged it & still vents out Even the smallest pinhole leak in this system will significantly decrease turbo charger efficiency and is unac-ceptable. Does anyone here have any suggestions if so post pics and how to. $35 for the part. Inspect the valve cover gasket for cracks or hardening, and replace if necessary. Doesn't smoke anymore out of the oil filler hole. Its role in managing pressure and fluid dynamics ensures the efficiency and reliability of the vehicle’s systems. I assume my vacuum is good, since my 4WD engages almost instantly, and HVAC works properly. I have a oil leak from my breather tube I have a smarty senior tuner on it! When I run it hard it leaks all over my truck from the breather tube I was wondering what I need to do about this problem! About 1 week ago it was leaking real bad I lost about 3 gallons Persistent oil leaks after gasket replacement often indicate warped valve covers or improper torque. 55 diffs. Jun 7, 2012 · 6. Aug 20, 2023 · 05 6bta 330hp. - How to fix another leak. One is a vent tube and the other is the main gas filler line. Have you capped the inlet of the vacuum pump to see how much blowby is present? [/QUOTE] So I just capped the inlet on the vacuum pump Oct 9, 2017 · 6. I thought my vent line was clear, but turns out it was plugged somewhere upstream of the transfer case. Mainly just need to vent a little - one of those days. what made this a real PITA to find, was that it was real intermittent to the leak was either Mar 13, 2024 · A bit of smoke (steam perhaps) is constantly released from the vents at idle, but when driving, a lot of oil is leaking out of the #4 valve cover vent, but not the #1 vent. A clogged CCV (Crankcase Ventilation) filter causes pressure buildup, pushing oil past seals like the oil filter gasket and valve cover, leading to leaks on the firewall and bellhousing. 7 Cummins engine is a damaged or corroded heater core located behind the dashboard, resulting in a puddle of coolant in the footwell. I saw a video where this guy stuck his fingers into the intake on the EGR side and came out with oil on them. Very likely you have another leak somewhere. 9 developed small cracks in the tappet side cover gasket. Please read the post entirely before responding with irrelevant answers, that being said I do appreciate input. Dodge 5. iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Excessive Blow-by Cummins 5. PIN POINT THE PROBLEM THAT WAS THE O-RING IN THE DELETE KIT THAT GOES IN THE STOCK COOLANT TUBE MUST GONE BAD. The crankcase vent tube appears to be functioning normally and I can't find any vacuum leaks. Gduwb@msn. 9 Cummins engines have of puking oil out the breather and all over the underside of the truck, I finally came up with a bulletproof solution fo you. Jan 9, 2010 · I had it all put back together to stock and now oil is puking out the crank case vent tube. I've replaced it but cant seem to stop this thing from flinging goo under the truck. The pans are pretty good about sealing but the overdrive housing to main case is another leak point. Hose clamps, puncture, broken plastic. If diesel fuel is found in the crankcase, complete the current SI diagnostics for Fuel Leaks Inside of Engine If there is no fuel in the engine oil and the crankcase is not overfilled with oil, check for a sticking or inoperative PCV check valve. Does anyone have any trouble withetheir breather bottle overflowing excess oil?? I empty it every oil change and when i see excess oil under the underside of the truck. The leak is very small and I have not noticed temperatures acting funny or the truck running any differently. I have a 2018 2500 with 60,000miles. Thanks. 1. the blow by tube makes a nice stinky cloud and drips pretty healthy. In the process of elimination oil leaks in my 2001 Dodge Ram 3500 with the 24v Cummins, one of the more obvious oil mess sources is the Vent Tube. any ideas what could be the problem? thanks guys Nov 18, 2017 · 2001 Ram 2500 4x4 5. 9 L last week and have a question or two. Other potential sources of coolant leaks include the radiator pan gasket, drain plug, and radiator cap. No plate and tuned afc. This is where my leak is coming from; where can I get an O ring if I'm right, or how do I fix Dec 31, 2007 · 98. Mar 31, 2011 · Hey, has anybody experienced their transfer case pushing oil out of the vent tube? I just looked under my rig today and found the crossmember under the transfercase and it was completely oil soaked. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / EGR bypass tube housing leak Feb 1, 2012 · Now, I know vacuum leaks can cause venting through here, and my cruise nor HVAC controls work so I know I have one, but would a vacuum leak really cause THAT much steam/smoke to vent out? Oct 2, 2009 · adding TCW3 2 stroke oil to the fuel helps with these 3rd Gen Cummins. $1400 for the labor to replace. I checked for blow by using the oil cap method and it didn’t seem to have any at all. As near as I can tell, it seems to be coming out the breather tube. Once parked not a drop comes Aug 11, 2005 · And the vent tube I am refering to comes down the right front of the engine and vents just above the skid plate. Mine does leak yes I'm sure it is that, yes I'm also sure there is a possibility of it being the timing chain cover. Doesn't the vent tube have a hose back to tank too? 99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. My 5. Cummins crankcase vent MOD 12 valve (No more oil drips on the driveway!) Dodge Ram NoNonsenseKnowHow 794K subscribers Subscribed Jul 15, 2016 · It should be relocated further back. There are two coolant lines that are connected to that heat exchanger. Cheers Steve Sep 19, 2011 · I have a very slow oil leak that is coming off the bottom of the tube of my crank case breather. May 3, 2016 · hey all, i just dropped in my freshly rebuilt motor and currently only have 75 miles on it. As you probably already know, Dodge expects us to empty out that puny, hard to Aug 11, 2005 · If an excessive oil leak from the PCV vent tube has been verified, check for diesel fuel in the oil. 2021 Grand Cherokee Trailhawk Hemi. On mine, the vent tube on the front Dana 60 is located on the passenger side of the differential, actually located on the 4wd vacumn actuator housing. Nov 7, 2021 · Today when I backed my truck out of my garage, I noticed a small puddle of pink-colored coolant under where it was parked. Engine CPL is 8557; Ser#35105225. I know it could be caused by overfilling the oil level but could what else could be Apr 30, 2025 · That could be from residual oil, or the breather tube is still leaking slightly. I just bought an 04 dodge ram 2500 5. Excess blow-by can force oil May 25, 2019 · I have noticed a big increase in the amount of smoke/vapor from my vent tube, seems to happen since the weather turned hot. Troubleshooting these problems involves inspecting the vent tube for signs of wear, corrosion, or obstruction. Aug 1, 2012 · You need to fill out your signature with more details about your truck.