Start checking to see if the oil level drops. You may have some worn valve
stem seals or have worn rings. A cylinder leak down test would be a good
thing to have done. My old GM S10 smokes on startup for about the same time
and I'm not worried. Stalling maybe be a choke or carb issue.



"ToneJohn" wrote in message
...
I have a 94' Chaparral with a 5.7 V8 Mercruiser. When starting the boat up
on the weekend after not starting up all week i get a blue/black smoke for
about 20 seconds then it dissapates. Also when starting it for the first
time i need to pop it in neutral and rev the rpms or else it will stall.
Any suggestions? ? ? Some have said since its an older boat/engine that is
nothign to worry about. Once it's running the smoke goes away and after
running a while i can start it right up w/o reving the rpms. Any info is
appreciated

-matt