quick question....
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Junior Member
Joined: Jun 2007
Posts: 296
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From: bay area, ca, usa
quick question....
while my car is runnig (96 coupe jdm b20) and i take off either the oil cap/dip stick or both should i feel air pumping out....... 
i know probably a dumb question but i never ran into this before
i know probably a dumb question but i never ran into this before
Joined: Mar 2008
Posts: 91
Likes: 0
From: East Side, MD
Re: quick question.... (96lsivtech)
thats normal, whats happining is the air pressure from the pistons moving up and down forces air out thats why your engine has PCV (Positive crank case ventilation) to prevent build up of this pressure and get rid of blow by gasses.
Thread Starter
Junior Member
Joined: Jun 2007
Posts: 296
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From: bay area, ca, usa
Re: quick question.... (JEGD16Z6)
oh aight thanks, i was adjusting my valves and when i put my vc back on i left the oil cap off why i took it off idk but when i went to put it back on i felt the air...thanks
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