Fuel smoke and fouled plug

I was reading an unrelated thread on Moparts and saw this interesting post:


So if you're still burning oil on #8, and the seals are ok, I'd continue to look for sucking oil into that port...

Thanks for this info! I know it’s sealed up better than it was since my vacuum increased, BUT it’s still possible I’m pulling oil in. When it’s barely warmed up, it runs like a top. Only after driving it around and getting on it or reving it up in the garage does this crap start. Let it sit the next day and it’s fine at startup again until it actually gets used.

my buddy suggested possible glazed cylinders and blow by. Since I have good compression and only 6% loss on leakdown. I just think the motor was never properly broke in before the previous owner started ripping on it, had way too rich of a carb running on it, and now I’m chasing the gremlins.

Im seriously considering paying a shop to do a ring replacement and cleanup. Then I’ll know what cam is in it, what compression it’s running, if it’s been bored out, all that.