75 powerwagon oil leak

BLACK ACTUAL · Jan 17, 2014

I have a W200 "Adventure Sport" that sports a 360 and a 4BBL carb.
I had the engine rebuilt and some aftermarket "performance" parts were added into the mix which are causing me a bit of trouble.
I have noticed an oil leak and finally narrowed it down to my pcv breather and I also noticed it bubbling over from the half moon shaped area between the intake and the valve cover in the picture that I have attached.
I have been given two different diagnoses...one is a cracked head(dont buy it) and the other is the intake manifold gasket(more probable).

I am looking to get your opinions on this.

dodge dude94 · Jan 17, 2014

Ehhh, I dunno. I might be more inclined to be looking at the valve cover gaskets.
Intake manifold leaks are usually vacuum or coolant, not oil.

NYCruiser · Jan 17, 2014

X2 - Definitely try valve cover gasket first!

BLACK ACTUAL · Jan 17, 2014

Roger that.

Would a cracked head be a possible culprit or is that guy who threw that on the table sucking exhaust fumes?

Its also spitting out of my pcv breather. I swapped the grommet for a baffled one and its still happening.

NYCruiser · Jan 17, 2014

Is there a lot of blow by if you pull the oil cap while its running?
Could be leaking compression somewhere, hate to say.
Bad rings will cause excessive crankcase pressure.
Also too much timing & advance can cause pressure build up. Check the timing carefully.
Do a compression check. If normal, do a leak down test.

dodge dude94 · Jan 19, 2014

^Yes yes yes.

Compression test before going any further IMO.

BLACK ACTUAL · Jan 21, 2014

Culprit: bad intake manifold gasket.

75 powerwagon oil leak

BLACK ACTUAL

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