12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

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Old 03-13-2009, 01:36 AM
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well I tore into my truck today expecting a hole in piston, gouged cylinder wall something but found nothing wrong.
Last week I drove the truck bout 200 miles used 2 GALLONS of oil filled it up with oil again thought maybe I haven't checked it like I need to and used 2 MORE gallons on the way home, oil spots down the side of truck and all over tailgate. Is there anyway it's just wore out it only had 275,000 miles on it. The cylinders look perfect maybe a broke ring?? I have another engine I'm swapping in just wondering what the hell.
 
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Old 03-13-2009, 01:39 AM
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rear or front seal blown out?? Could be a broken ring but the thing would be smokin blue like a motha if it was burning that much oil...could be KDP come out, all kinds of good stuff could of happened
 
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Old 03-13-2009, 02:29 AM
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kdp is a oil drainer alright
 
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Old 03-13-2009, 10:48 AM
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no pulled the front timing coverto remove pump and check for KDP still intact and the oil was coming out the blowby tube. I've had these trucks with a little blowby but dang!!
 
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Old 03-13-2009, 04:40 PM
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is the truck burning it. is it running like a raped ape, alot more smoke. i cant see cant see a motor scanvenging over 2 gallons of oil without something obvious.
 
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Old 03-13-2009, 06:03 PM
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smoke always black except in morning til it warms up, do ya'll think I could have busted a compression ring and it is pressureing up the crankcase and blowing it out the blowby tube
 
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Old 03-14-2009, 07:09 AM
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i was having the same problom not long ago. i changed the head out and it started blowing oil bad. it turned out i have a bypass oil filter on my truck that drianed in to a valve cover that was causing it. worked great with the other head but not this one. i dont know if your runing a bypass filter or not but thought it might help.

also if you have it apart you could pull the push rod cover and see if a oil return passage is blocked in it.
 
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Old 03-14-2009, 10:02 AM
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i'll try that thanks
 
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Old 03-14-2009, 04:27 PM
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It could be a valve seal or even the rear seal in your turbo. I was smoking a little and it turned out that the oil fed to my turbo was getting into my exhaust stream past the turbine wheel.
 
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Old 05-06-2009, 11:14 PM
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mine done the same thing turned out to be head gasket
 
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