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Old 01-19-2022, 01:03 PM   #1
ellisjay2
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Join Date: Feb 2014
Location: marietta ga
Posts: 147
Double pumper Holley problem.....

I've tore apart a 4150 and reassembled with new kit. Problem originally was starvation of fuel....was not spraying out of nozzles but running on choke. Cleaned out fuel tank, fuel lines, tore apart carb, soaked cleaned, all passages clear when blowing carb spray or air......I got it from someone that I believed let it sit up. With a new diaphragm, on both primary and secondary pumps, new brass floats, needle and seats, fuel will not make it to the passages up to spray nozzle. Ive done about all there is to trouble shooting, only thing I can think is the metering blocks are bad....it sits on my stock 350, engine will run, but no spray when opening throttle......I set fuel bowls to right levels.....
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: Eli540

86 gmc 2500 longbed Carb 5.7, rwd,
400 tranny.
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