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series3109
02-25-2019, 08:06 AM
Hi, I am looking for some help and insight. I just had my valves adjusted, new carb (Weber), timing set and the truck ran flawlessly for about 500 miles.
Then one day coming home, I saw that it was blowing blueish white smoke from the exhaust.
The performance has been about the same. No difference in acceleration or cruising. But a lot of smoke when starting, sitting at a light or stop sign. Burning a little more oil than what I had been, which was none for the first 500 miles.
I pulled the plugs. All 4 are soaked in oil. All identical.
Is this a cylinder head issue? I have replaced the diaphragm in the PCV valve. That seemed to have cured the problem briefly. Then it started smoking again on the next drive.
I have yet to do a compression or leak down test. Are either or both better recommended?
Thank you all for your help here.
Dan

fly cubs
02-25-2019, 11:59 AM
Dan-

Have you tried running without your oil-bath air filter? It could be pulling in oil from there. If that's not it, I'd try the compression test to see if you have a ring issue.

cedryck
02-26-2019, 01:03 PM
Blue means oil. Yes compression check, rings, valves, how is head gasket?