My car was smoking real bad so i did a rebuild on it. I replaced main bearings, rod bearings, cleaned pistons, new piston rings, newer head, new head gasket, new o2 sensor, and plugs. I got over 400 miles on that rebuild and it is still smoking real bad. I am out of ideas and i was wondering if anyone can give me some suggestions.

Thanks,
Patrickr

 

what color smoke? compression and leakdown numbers? how did you break it in?

 

rings might have not fully set yet

 

did u replace the valve seals??

 

Check your coolant level. If the smoke is white it's a main seal

 

The color of the smoke is like a whitish grey.

 

No, but i think i probley should have.