194 engine on frame no real load
Smokes some on initial start
Heaviest smoke on rev after prolonged idle.
Steady low cruise rpm very little if any smoke
Steady high cruise rpm hint of more smoke than low cruise
New plugs all show identical light even oil on threads, but the electrodes at the tip are clean of oil. No stand out member of the group.
Gonna do valve seals
I have run this engine on the frame in 2011, 2012 while waiting on body work completion and now in the first part of 2013. The engine has always been very well behaved never smoked or I would have done a more thorough job while i had it on the stand. the only thing I did differently after a regasket, was add 8 oz of Marvel Mystery Oil and clean the original PCV valve and clear the clogged PCV hose nipple on the manifold. After 3 run periods totaling 45 minutes on new oil and MMO, the six began smoking on rev after idle.
Drained the oil and it looked like coffee. I Didn't intend to "flush" the engine, but MMO obviously has strong solvent properties. Had a couple of run periods since with fresh oil but it appears the smoke is hear to stay. The engine has 35K miles on a re-ring done a very long time ago, it just has had very little run time over the years.
I hope to see no problems when I pull the head.
Thanks for the replies
