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HELP gas in oil

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Old Apr 22, 2011 | 07:39 PM
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Default HELP gas in oil

Just rebuilt my 3.9 and now I have gas in my oil any ideas It starts great does not smoke thought it my have been the injectors the engine was I found out was out of a 92 mine is a 95 so I first went back with 95 injectors ran a lot better but the gas in the oil was worse can go about 100 miles and I have to change the oil
 
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Old Apr 22, 2011 | 07:44 PM
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Originally Posted by jonl326
Just rebuilt my 3.9 and now I have gas in my oil any ideas It starts great does not smoke thought it my have been the injectors the engine was I found out was out of a 92 mine is a 95 so I first went back with 95 injectors ran a lot better but the gas in the oil was worse can go about 100 miles and I have to change the oil
The only path is the intake seals or ring blowby or leakdown from a rich mixture/nonfiring. Is the oil milky?
 
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Old Apr 22, 2011 | 07:45 PM
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Leaking injector and a leaking gasket.
 
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Old Apr 22, 2011 | 07:58 PM
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No the oil is not milky at all
 
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Old Apr 22, 2011 | 08:02 PM
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X2 on the leaking injector gasket ring. Another possibility.
 
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Old Apr 22, 2011 | 08:10 PM
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Do not now if it matters but if I rev the engine up to about 2000 rpm the pcv go nots you can here it all the way in the cab
 
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Old Apr 22, 2011 | 09:58 PM
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take your oil cap off and snap the throttle see how much air rushes out. then let it idle and see if you can feel little puffs. if it's pronounced then you likely have a blow by issue. but i x3 on the leaking injector. if you start it then come back in ten mins just put the key and straight to start without pausing in the on possition does it fire up or crank for a second? if you have a fuel pressure gauge just hook up and see how much it bleeds in fifteen mins.
 
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Old Apr 22, 2011 | 11:49 PM
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ok I did what you said 9652dakota and no air rushed out went back out ten minutes later and it fired right up but I dont have a fuel pressure gauge to hook up to it will try to get one in the morning
 
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