[cadillac512]

Originally Posted by AnthonyG

I understand what ur saying but the reason I thought maybe valve not closing right letting the exhaust valve pull smoke from crankcase? Today I noticed while warming up before compression check the smoke from the oil input tube comes out put-put-put fashion suggesting exhaust valve effect? For now I removed the pcv valve as it failed from crud. If the smoke issue settles down will put fresh one in. Thinking of using a Mopar type oil cap w vent tube on side of cap to pcv to vent crankase after the smoke issuWhat would u think of Seafoam engine cleaner or what I did as a teen agent auto tranny fruit to clean any carbon out?

Well...if the smoke from the breather comes out in a puff-puff-puff fashion and compression is low on one cyl the news may be bad. A valve cannot do that-and also can't pull smoke from crankcase. It's time to put air pressure in the low cyl (with both valves closed on that cyl) and watch for air escaping from the crankcase vent. Possibly a piston/ring issue.


Terry