i just recently put a top end in it and bored it out .30 over. It ran fine after that but now white smoke comes out of the exhuast. I dont know what to do.

 

Has the engine been running a bit different since the smoke first appeared?

Usually, one that puffs out white smoke after a fresh rebuild has developed a head gasket leak.


If that is not it, it will be fuel related. Sticking choke or dirty carb.