4.0L Oil blowing out of dipstick. Need help and queations?
#18
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
the hoses not valve cover rear should hav vacuum at idle front will have no suction unitl you driving
#19
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
the back hose relieves crank case pressure at idle the front does it when cruising when does oil blow out
#21
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
the front hose has no blockage all the way to the factory air box,and clean hole at valve cover
#23
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
run the ehgine remove front hose and rev it see if theres suction at the hose with finger
#25
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
pretty sure there should be more than a little id check inside air box gotta be some thing blocking
#27
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From: Elizabeth,Co
Year: 1988
Model: Comanche
Engine: 4.0L Inline 6
Originally Posted by freegdr
the answer gotta be there its not over full with oil right
#28
Dip stick blowing oil out
I'm 65 yr's old and alway's have worked in an aotomotive machine shop or as a mechanic. I build race engine's for the racing Mustang's with around 1800 hp with a turbo or supercharged. Now to answer your question it sound's like you need a ring job and the right way to do it is bore it if the wall's are out of spec and put new pistons and ring's in it. There is not a nightmare, you just have excesive blow by. Do a comp. check, they should be around 150 LBS with no more than 10% variance.
Last edited by racer; 09-19-2011 at 07:41 PM.
#29
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Joined: Jul 2011
Posts: 324
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From: Richmond, Va
Year: 1992
Model: Cherokee
Engine: 4.0 liter I6
Compression spec is 120 psi. If this did not start until you replaced the broken valve then i would look there. the front one should not be a valve at all. the rear one should be a valve. Make sure you didnt put a valve in the front one. It should just be a straight through elbow to the airbox