leaky bronco
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Junior User
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leaky bronco
have this leak I can not figure where it is coming from . I have a 351w that is in a 87 bronco. ther leak apears to be from the front right of the motor. I thought it was the valve cover gasket so I replaced it. but the leak is still there. so . I cant find out where it is coming from but the power stearing res always has stuff on it. I ran the motor and I cant see any oil leaking from the valve cover. the only other thing I can think of is it is comeing from the area around the intake man. The wierd thing is I put a qt of oil in(because of the oil lose) and forgot to put the cap on and it didnt leak.
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From: Duncan,OK
Try changing your PCV and crank case filter also make sure your getting plenty of vacum to the PCV. These two items are the cause of a lot of oil leaks and are the most over looked. When you leave the oil fill cap off it lowers the case pressure so that oil is not pushed out. A properly operating case ventilation system will keep this pressure down on it's own provided you don't have a blow by problem that over powers the system.
Pat
Pat
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i did replace the pvc valve twice in the last month. I found out part of the problem was the guy I bought it from had two pvc vales on it and one of them needed to be the breather so to much presure was causeing the oil to leak out of a thin spot in the gasket but no sure witch on but I know its not the valve cover now.
