- Cummins crankcase breather leaking. I plan to run either Rotella T6 5W40 or Valvoline Premium Blue Extreme 5W40, both are full synthetic, and easy to find. Right: Normal Oil from Crankcase Breather Tube. Question is, why is it at least 1 quart over full? First thing I think of is fuel dilution in oil caused by CP3 seal or cracked injectors. the truck is leaking oil from the crank case breather on the back of the motor. Please help Thanks:confused013: Oct 23, 2010 · my truck leaks a good bit of oil and it looks like the oil pan gasket and or rear main seal, so i was just wondering if a clogged breather could cause this? and if there is a way to check the crankcase breather? :banghead: Jan 26, 2018 · My truck has the stock crankcase breather bottle. Just Declared WAR on the EV Industry! While Tesla and the rest of the auto world are chasing batteries, Cummins just flipped the script. Jan 17, 2016 · Cummins Inc. What could be the problem? High drive pressure? My motor only has about 8k on it. I recognize that some oil out of the tube is fine and I have experienced that up until now. 3L-ISC-350HP, CAPS FUEL PUMP FAILURE (Fault Codes 277, 539, 111) Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. 9L Cummins 03-07 Powertrain Jan 19, 2020 · Cummins arn't known for keeping the oil inside. 4K views 3 years ago Replacing CrankCase Breather and Drain Found leaking oil everywhere!! more Excessive oil in the engine, worn-out seals, faulty compression rings, high crankcase pressure, and damaged PCV valves are common causes of oil escaping through the crankcase breather. Apr 19, 2016 · Usual fix is to extend the breather to the back of the motor and let it dump down by the frame. Nov 20, 2018 · I've got a cummins isc in a 2013 Freightliner M2 Recently started getting oil drips on the floor. 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. Theres a very leaky seal behind the timing cover you have to remove a cam gear for. 7L Cummins engine and I want to make sure I use the right motor oil and I've always used Shell Rotella. Could I need another filter already? If I pull the oil cap on the valve cover with the engine running there is very little blowby coming out the hole Mar 25, 2012 · A friend and I believe the Crankcase Breather is leaking. If Schaeffer's 9000 was more readily available I'd definitely consider it. Sep 5, 2022 · Discussion on the best and worst years for Cummins ISL 400 engines, including considerations for common rail fuel system and DEF system. I recently noticed that there was what appeared to be smoke/vapor coming out of the crankcase breather tube. 5% or 22° slope/grade). It is making quite the mess and getting oil all over the underside. Shell Rotella 10w-30 T6 lists every spec except Jan 25, 2025 · Here is my full delete list of parts & mods made to my 2017 Cummins powered Laramie. 9 Cummins Oil Leak Crank Case Breather AM PM Mobile Repair 14. Apr 13, 2025 · Over full will cause crankshaft wind age & can increase crankcase pressure plus cause airiation to the oil due to crankshaft whipping through oil instead of skimming over it. actualy its a small drip about 16 seconds apart. 7 Cummins. . Oct 30, 2024 · Hi Everyone, I got a lot of help from this forum - thank you all - so I've created an account and am posting this to give back. He has never seen one leak before. 2K subscribers Subscribe Oct 2, 2009 · Help! Blowing oil out of the crankcase breather | Cummins Diesel Forum Home Forums 2003-2007. I just hooked up to my trailer (14k) for the first time and I have tons of oil blowing out the crankcase vent tube. the other night i went about 400 miles and went through Apr 14, 2017 · I installed my twins a couple of weeks ago and not had any issues with leaks or blowby. About a quart every 5 hrs at cruising. WTF is going on here?? At idle, I can 5. Others have done more involved breather boxes and drains, but those require maintenance and have the potential to freeze. Engine has zero blow by and no loss of power can be felt. See picture below. I assume this is because of the hydraulic roller lifters, instead of the old reliable flat tappets. when im pulling my trailer it dumps out. Subscribed 8 1. As near as I can tell, it seems to be coming out the breather tube. Could I need another filter already? If I pull the oil cap on the valve cover with the engine running there is very little blowby coming out the hole Apr 30, 2025 · That could be from residual oil, or the breather tube is still leaking slightly. I have no visible leaks anywhere on the engine other than the breather tube. 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 Subscribed 8 1. Truck has 135k miles and is other wise running fine. 0 3rd Gen Dodge 5. There is/was a cummins kit that returned oil from the breather to the crankcase 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 read that it could be indicative of a problem with the vacuum pump but it Aug 20, 2023 · 05 6bta 330hp. It is noticeable when the motor is warmed up to operating temp. Jan 12, 2019 · Hey I’ve got an 02 dodge Cummins 2500 24v. Makes a little more mess back there than you would have otherwise, but keeps oil off the radiator. It really came in handy when trying to locate Apr 22, 2020 · Thought I would share my experience with the P2227 error code and replacing the Barometric Pressure sensor on my 2018 RAM 2500 with the 6. Got a few questions however as when I am sitting on level ground at a stoplight I see smoke coming from both sides of my truck. Nov 22, 2009 · i have a 98. Just make sure it isn't blow by or from a leaking turbo seal. There is little to no smoke coming … Read More Mar 26, 2012 · My truck suddenly starting losing oil a couple weeks ago. I changed the crankcase breather filter only a couple of hundred hours ago. Apr 30, 2025 · That could be from residual oil, or the breather tube is still leaking slightly. 4TH Generation 6. Is the breather servicable? I have not found a part number for it anywhere. 7L Cummins 2003 Cummins 8. even some bolts on oil pan. Their CEO announced a revolutionary hydrogen-powered engine —and insiders say it could shock the entire auto industry. 9 24V Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. I can take my oil fill cap off and smoke comes out Oct 31, 2024 · Seeing oil leaking from the valve cover breather is something many vehicle owners encounter, especially those with high-mileage or high-performance engines like the 6. 4K views 3 years ago Replacing CrankCase Breather and Drain Found leaking oil everywhere!! more Figure 1, Left: Signs of Excessive Oil from Crankcase Breather Tube. Join the #1 RV Forum Today - It's Totally Free! Feb 15, 2022 · Cummins provided me with the complete parts diagram for my Onan Quiet Diesel 8000-watt generator, and I have attached it here for your future reference. Apr 13, 2025 · Truck has zero blow by, can turn the cap upside down and it stays Truck is an 06 with all plastic one piece valve cover unlike 03-05 and 07. Should consider an oil sample test. 7L Cummins Delete & Tune Mod List Delete & Tune mods • Edge CTS-2 Insight monitor with Cummins unlock • 13 – 17 EFI Live Dodge CSP4 tune package by PPEI / Kory Willis • 13 – 17 EFI Live Dodge transmission tuning • Cummins tuning iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Excessive Blow-by Cummins 5. Refuels in MINUTES (not May 30, 2019 · The 2019 CGI Cummins doesn't call for 15W40 at all. Many drivers notice this issue when they see oil leaking or puking from the crankcase. Feb 28, 2011 · Cummins Breather Kit/Crank Case Vent Jump to Latest 45K views 37 replies 12 participants last post by SK_OILBURNER Mar 12, 2011 botlebruiser Discussion starter I'm not sure where to really start looking for this problem. 7 Cummins Diesel. The thing still sounds and runs normal, EGT and boost are normal, oil pressure and water temp also normal and no abnormal smoke. Upon inspection, they seem to be coming out of the oil separator tube. Root Cause: Debris from valve cover manufacturing process can plug the lubricating oil separator breather system, preventing lubricating oil from draining back to the crankcase. My vehicle is a 2022 RAM 2500 with the 6. Like everyone who owns this truck, I seemed to get the dreaded "exhaust system regenerating, continue Jun 23, 2025 · I have a 2025 RAM 2500 with the 6. when i run the truck normally it barely leaks. Thanks. I looked in the owner's manual and searched for the correct motor oil that meets the proper specifications. 5+ so it has the baffle style crankcase breather After taking a 200 mile trip today pulling a trailer up and down some decent hills (65-75mph or Apr 16, 2020 · Hi, everyone so I have problem and I can’t find anywhere online with the same problem. 5 3500. Engine is leaking oil out of breather tube, top of dipstick, last two valve cover gaskets. yocg oy9ovu0h xm3 neg hgs vkzsi4 sl31tv upyvzt gznkgt uwddu
