Thread: Possible Carb. problem

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Just built a 350 sb, brand new motor, runs great when cold, but after driving 20 min or so, will not idle. Acts like it wants to flood, but I'm not sure. Thanks for any help.

What kind of carb, how much fuel pressure?

edelbrock 600

Edelbrock has a great tune up chart on their site to calibrate their carbs! Is it an electric choke or manual choke? Possible the choke is not going fully open when it warms up, floats set too high, too much fuel pressure (Edelbrock carbs don't like much more then 4-5 psi), or just plain too rich in the intermediate circuit. Their tuning guide should help you sort out the problem.

thanks for the help