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98.5-02 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect..NO ADVERTISING .

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Old 12-11-2011, 10:58 AM   #1 (permalink)
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Fuel in Oil Pan

Truck starts up rough, and has a slight knock, getting fuel in the oil pan, and builds up pressure in fuel tank, and white smoke from the exhaust, any ideas?


1998.5 Cummins 24 valve, Airdog 150, super b special turbo, 12 mm head studs, .093 cross over tubes, Hot Rod VP pump, DDP 150 sticks, nv4500, i think thats about it.
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Old 12-11-2011, 11:16 AM   #2 (permalink)
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Blowing compression into the fuel tank could be...
  • Cracked head
  • Bad copper shim on the injector
Fuel in the oil could be...
  • Bad front seal on the VP44
  • bad injector leaking fuel
Time to do a compression test.
Mopar1973Man's Dodge Cummins Articles - Compression Testing

This will tell you if the head is cracked...

Then I would have the injectors pop tested. This will rule out a leaking injector.
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Old 12-11-2011, 01:40 PM   #3 (permalink)
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Could be a loose injector leaking both ways. What have you done recentlly, before this malady started??
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Old 12-11-2011, 02:02 PM   #4 (permalink)
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I rebuilt the motor about 6 months ago, and everything has been running fine, I just replaced the transmission about 2 months ago, the head thats on it is brand new, so i don't think thats the problem, i retorqued the head about 2 months ago.. thats it though..
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Old 12-11-2011, 02:38 PM   #5 (permalink)
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since it can't be the engine messed up internally by your diagnois, it must be the headlight switch routing current into fuel tank causing fuel to swuirt into pan after the tank is reverse pressurized. HeHe.
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Old 12-11-2011, 04:26 PM   #6 (permalink)
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Quote:
Originally Posted by dozer12216 View Post
since it can't be the engine messed up internally by your diagnois, it must be the headlight switch routing current into fuel tank causing fuel to swuirt into pan after the tank is reverse pressurized. HeHe.
I'm stumped then...
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Old 12-11-2011, 04:36 PM   #7 (permalink)
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It could be a cracked injector body.
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Old 12-14-2011, 06:03 PM   #8 (permalink)
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Im going with it being an injector, thanks guys!!
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