Hello Stevebfl

Thanks for your replay and appreciated very much it and is nice to know that we all ways find some one out there for help.
I had done this before and all cylinders work fine. The smooth start does only once at cold start, after that the engine is very noise. But if I start next morning it start nice smooth and after 1/2 minute the noise is back again with smoke.
I just bought a used cylinder head for refurbish, but I would like to know for sure what is going on with that engine, before replace the cylinder head.

Again thanks for your information and I'll keep trying to see what is next.


Tulio