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Don Dalton

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gas boiling in the carbs , not good . My only thought is to raise the carbs off the manifold by 3/4 of an inch . Electric fuel pump with no return , but the rubber/steel fuel lines are not hot to the touch . Any recommendations ?

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Do you have fuel to the carbs..if yes it isn't vapor lock. If you can hear it boiling in the carb most likely percolation. When you look down into the carb is fuel spilling into the intake? Does you're intake still have a heat exchanger of some sort? Hard to see on the pic. Can be the float isn't completely closing off the needle and seat. How does it start after Hot? Does it shoot out smoke, do you have to floor it to dire up? What temp does the motor run. Are you running a high percentage ethanol blend. Lots of variables. A phenolic spacer may help. A heat shield between the ext and int manifolds may help. Check the condition of the carb if it's a fairly new problem. Kinda need a little more info to pinpoint the root cause.

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