I have a Nissan lift with a TB42 engine. The problem is it won't start when cold / cool. If I remove the supply line from the mixer to the carb, it will start every time. Put the supply line back on and all is well until it cools again - same procedure again.

Seems like it is getting flooded, but not sure which part of the system is causing it. The mixer is an Impco Model L.

Any ideas???

Thanks.