new fuel pump.. stumbling..
#1
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new fuel pump.. stumbling..
ok so my fuel pump decided to leave me stranded the other day when it died on me... well i replaced it with a holley blue.. now i know that is way too much pressure, so i got a cheapo fpr at autozone... i set it at 5psi at first, drove it about 10 feet... sputtered and died... so i took i tto 3.5 and drove home fine.. then next day i go to start her, and nothing... so i pulled the fuel line off the carb, and no fuel was comming out... so i set it to 5psi again and it held steady. I drove around the city a bit and everything seemed fine. till i got on the high way and could not go over 60mph in 3rd, 4rth, or 5th!!! is the fpr? it was like $25 at autozone. should i take it back and get a holly fpr? or what should i do? (i also replaced my fuel filter while i was under there)
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ok so since then i messed with the regulator... check floats, and noticed at 4psi it was barely half full.... now at 5.5psi it is at half... and now at 5.5psi i can go up to 70mph on the high way... iv also noticed that im using WAY more fuel then i did befor the old pump went out... as well as a lack of power..
#6
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DO NOT touch the floats. If they were fine before the pump failed, there's no reason to think they've changed now. Get the Holley 1 to 4-1/2 psi fpr and a decent fuel pressure gauge. Re-Speed sells an excellent one. The local speed shop here sells a fair gauge for 10 bucks that I use. I can't say I fully trust it but I've compared it with other gauges I have and it seems to be accurate. If you want your new Holley pump to last longer, spend the extra bucks and get the Mallory 4309 fpr which has a return port.
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rgordon1979
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03-15-22 12:04 PM