Hello,

I have a 1990 LT4WD that was smoking a lot. I took the carb apart and cleaned it. The needle and seat hold 12 pounds, this was leaking because gas was getting into the crankcase and causing it to overfill.
I also changed the valve seal to make sure that wasn't causing the smoking.
After I put everything back together it starts and runs great until it gets warm, then it spits and sputters and runs rich.
Any ideas?
Does anyone have a diagram of where the little hose from the carb goes? the big on is a vent but the little hose have vacuum. Fuel pump?

Any help is appreciated.

 

Welcome to the forums.
Sorry I can't help with the hose but I thought I'd chime in on::
"I took the carb apart and cleaned it. The needle and seat hold 12 pounds, this was leaking because gas was getting into the crankcase and causing it to overfill."
Ethanol in your fuel prolly caused the flooding issue. It seems to gum up the needle/seat and makes them stick.