I'm driving down the road and car floods out. After waiting 2hours for tow I got it home and had my brother look at the carb while I tried to keep it running. He noticed that the primary boosters were throwing all kinds of fuel out eventhough the engine was just off idle. I have no clue why they are coming on so soon. Any help would be greatly appreciated. Carb is a holley dbl pumper.

AAA sucks!!! 40 minutes to them is 7200 seconds in real people time.

 

float level

debris on needle and seat

Did gas come out the secondary bowl vents also?

 

^^^ what he said. One of the good things about Holleys is that the inlet needle pops right out the top for cleaning. Remove the lock screw and use the nut to turn the needle assembly out. Clean and reinstall. About 3 threads showing above the bowl casting is a good starting point. Pop on nut and lock screw.

Then remove the sight plug on the side of the bowl, fire up engine, idling on a level surface. If fuel level is too low, loosen lock nut a bit and turn needle out CCW to raise float level. Lock it back up. Turn needle CW if it needs to go down. Have a rag ready cause it tends to squirt gas out when you loosen the lock screw.

 

thanks for the input. I have already replaced the needle and seat and checked float level. I think that I will just by a rebuild kit with some metal floats and clean her up real good. Someone told me that the stock plastic floats will deteriorate and cause more junk to be in the bowl.

 

usually holley carbs have a brass float, no matter which float it has check to see if it still stays buoyant in gas so it can work properly.

good luck

 

pick me! pick me!


check the power valve too!

 

power valve has been replaced too

 

If its flooding over on its own and the float level is correct then clean out your airbleeds, specifically the inside (towards discharge nozzle) high speed bleeds.

 

Did you ever figure this one out?


Make sure there is a gasket behind the power vavle.

 

since this is my daily driver I already purchased a new carb. I'm going to fix the old and keep it as a backup. Thanks for all the input. I'll try cleaning the air bleeds next.