Oil/Smoke out of crankcase vent, need help ASAP please! - Dodge Cummins Diesel Forum
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Old 06-19-2013, 06:44 AM   #1 (permalink)
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Oil/Smoke out of crankcase vent, need help ASAP please!

My truck is spewing oil and a small amount of smoke out of the crankcase vent on the driver side of my motor. The two things that have come to mind after researching my problems, bad injectors or cylinder/piston ring damage. I'm pushing towards the bad injector idea, and am hoping for that, as i dont want to rebuild my motor that only has 105k on it. Only aftermarket mods are afe stage 2 cold air pro dry s and 5" turbo back mbrp striaght pipe.

One day I noticed a gassy smell and saw a small leaked puddle under the truck. I go to fire it up to find out where the leak was, and it was coming out of the crankcase vent. Along with some white smoke, oil and what smells and feels like fuel are all over under the truck, a massive mess. Even painted the tail gate pretty good. Ive started the truck with the dipstick out, no oil came out nor smoke. Took the oil cap off the top of motor while running, no smoke or oil came out. Sounds like its knocking more like a powerstroke then it use to, but not too bad. Dipstick seems extremely over filled when truck sat overnight. I know theres only 3 gallons so that doesnt seem right. Oil pressure drops to zero after idling for 20 secs+ at lights and such. From what ive read, seems like I have some failing injectors. Any help would be greatly appreciated!
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Old 06-19-2013, 02:46 PM   #2 (permalink)
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need some info on your truck...year and which motor?

knock could be bad injector but could be bottom end if you are losing oil pressure.. you need to verify oil pressure with a mechanical gauge
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Old 06-19-2013, 03:42 PM   #3 (permalink)
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Soon to have failing bottom end if you dont stop running it and get that fuel out of the oil!
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Old 06-20-2013, 12:55 AM   #4 (permalink)
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I stopped using it the day I found out. It's been sitting in the driveway, gonna take ut into the diesel shop that specializes in injection tomorrow first thing in the morning!
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Old 06-22-2013, 08:56 AM   #5 (permalink)
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Ended up being a damaged fuel injector. About $5000 later, the shop replaced all injectors with 60hp Dragonfly sticks and a Fass 150. Thanks for the help guys.
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