302 oil leak (back of intake manifold) question

[treihesse]

Ok I have a little oil pooling in the back of my motor on the passenger side. It settles in a valley and leaks down to the starter and over my tranny. Where would this oil be coming from? I have to assume this is a rear manifold leak?? The motor only have a few thousand miles. It really only happens when I hammer it hard... Thank You

 

[Sabas]

Rear manifold or pcv grommet, might also check vavle cover gasket
Sabas

 

[1970mule]

X2 on what sabas said. but i would lean to the rear of the manifold intake, probaly blew out the gaskey happens very often in that spot if not done right.

 

[treihesse]

sounds like a weekend project. I assume I now have a vac leak as well??? So RTV is the way to go still I assume???

 

[blubuckaroo]

RTV works great. Make sure you clean the surfaces first with acetone, laquer thinner or Chemtool to get all the oil out of the iron. I'll bet it won't leak there again. Also check the whole PCV system to make sure it is really free flowing. Sounds like it may be building up a bit of blowby pressure when it is run hard.

 

[broncnaz]

Doubt you have a vacuum leak unless its running rough. Very common for it to leak out the rear manifold valley. easy to fix should only take about 4 hours. RTV is the best. I like the black RTV.