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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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what causes fuel in oil
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Sun, 03 October 2004 14:49
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noticed my car has been HELL SMOKEY, talking cloudes of smoke on accel, decel, idle etc etc, initially thought it was the turbo but i checked the oil and it looked and smelt like fuel. drained it and yep, the sump was mostly fuel, the oil didnt even FEEL like oil anymore so i hate to think of the engine wear that was inccured.
replaced the oil, went for a short drive and all is fine, no smoke, checked it when i got back and it was still clean., but im guessing it will happen again.
what causes it?
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: what causes fuel in oil
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Sun, 03 October 2004 14:57
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in cars with a mechanical fuel pump, if the pump diaphragm ruptures, fuel will piss into the sump.. not good.
in an EFI car, the only sources for fuel into oil are the valve stem seals (being turbo, fuel could be blown thru the seal, into the oil system), or piston ring blowby where mixture gets past rings.
how's your compression?
Cya, Stewart
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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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Re: what causes fuel in oil
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Sun, 03 October 2004 15:01
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hmmm i have no idea,
btw its CA18det, stock ecu.
i put a thick 25W60 oil in there, worked a treat...
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Location:
Montrose, VIC
Registered:
May 2002
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Re: what causes fuel in oil
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Sun, 03 October 2004 15:18
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I presume it's not running disgustingly rich... and that the injectors/pressure reg aren't leaking? Does it tend to seem flooded on one/all cylinders when you start it?
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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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Re: what causes fuel in oil
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Sun, 03 October 2004 23:23
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nope, starts first crank every time. no smoke on start up.
also, doesnt seem to run super rich, blows the usual amount of black smoke out the exhaust as per all nissan engines..
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