its an 83 22r runs great no missing has no blow by but billows blueish white smoke & has what seems to be oil in exhaust ports of head.im thinkin maybe valve stem seals & new head gasket but not sure anything else i should check before tearing down ? ive done ruled out brake fluid & replace fuel pump.

 

sounds like valve stem seals to me too.

 

Yup, time for a valve job.

 

Maybe piston rings as well but we'll cross our fingers and hope they're ok

 

if you got the tools or know someone that does, a leakdown test would rule out the rings. if your leaking out your valve seals, you might hear air from the tailpipe or carb during the test. could also mean bad or worn seats.

 

just got done with valve job valve stem seals shot especialy on exhaust side all was har as a rock & every exhaust one had cracks.fixin to put back together hopin & prayin ready to hit the mud