[FC] engine smoking at start up and -

[N2VZD at aol.com]

if it is really a valve guide you may be able to feel the play by grabbing  
the spring near the keeper and see how much it moves up and down. i suspect an  
intake valve guide / stem clearance problem. i have found a few over the 
years  that were using too much oil for my liking that were loose enough to feel  
movement by hand up and down. this is not a precision way to check but it  
locates the problem at times. i once had a guide to head clearance  show up  as a 
dry black spot inside the valve cover. it was a failed exhaust guide  leaking 
combustion so bad it showed on the outside of the cover..
anyhow i would suggest heads to a good corvair shop. sometimes you can  spray 
blaster or oil or anything at the intake valves (one at a time)with the  
engine running and isolate the bad one or use propane enrichment (aiming unlit  
torch at each intake spring as close to the head as you can with the engine  
running, looking for change in rpm's) to find it.  these are some of my  backyard 
methods i have used over the years...by no means the correct method  ..but
oh by the way , is the right hand air cleaner housing oily from pcv?
regards , tim colson