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#1
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i need help i have a 1990 jeep comanche pioneer oil keeps coming out of the
oil cap whene it's on it do's it whene i rev it up the engine has been rebilt it has a 2.5 in it... -- Fred elliott |
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#2
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Your pcv valve/crankcase ventilation system is not working, or the rebuild
was no good and the rings are leaking and causing a too much blow by. "fred25401" <u26664@uwe> wrote in message news:66522fdbe084e@uwe... > i need help i have a 1990 jeep comanche pioneer oil keeps coming out of the > oil cap whene it's on it do's it whene i rev it up the engine has been rebilt > it has a 2.5 in it... > > -- > Fred elliott > |
#3
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That can be an issue with a plugged up CCV or PCV system that Jeep
engines are notorious for. I know several people that got sucked into new engines because the air filter was filling up with oil due to this. I am not 100% up on the 4 banger's system, but basically there is an intake from the air filter into the valve cover and a thin plastic suction line from the valve cover to the intake manifold. The suction line or the grommet it plugs into in the valve cover just gets plugged if it's a CCV system and it will blow oil. I use carb cleaner and a wire to ream out the plastic CCV tubes. The grommet's metered hole can be cleaned with a paper clip. If it's a PCV system, (unlikely) the valve should rattle freely. Here is an article specific to the 4.0 engine, but I believe your system is the same: http://jeep.off-road.com/jeep/articl....jsp?id=257985 Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) fred25401 wrote: > > i need help i have a 1990 jeep comanche pioneer oil keeps coming out of the > oil cap whene it's on it do's it whene i rev it up the engine has been rebilt > it has a 2.5 in it... > > -- > Fred elliott |
#4
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hdd wrote:
>Your pcv valve/crankcase ventilation system is not working, or the rebuild >was no good and the rings are leaking and causing a too much blow by. > >> i need help i have a 1990 jeep comanche pioneer oil keeps coming out of the >> oil cap whene it's on it do's it whene i rev it up the engine has been rebilt >> it has a 2.5 in it... ok thank you -- Fred elliott Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200609/1 |
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