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View Full Version : 1988 or 89 4.3 S10 with stock electric fuel pump

Ed
02-10-2003, 08:55 AM
I\'m going to run a Holley 650 dbl pumper. Do I need a fuel pressure regulator?
basementdweller
02-10-2003, 10:29 AM
yup
Ed
02-10-2003, 11:25 AM
What would be the best pressure to run?
kreepstr
02-10-2003, 12:03 PM
7 - 7.5 PSI
Ed
02-10-2003, 03:30 PM
Is there a return line on the stock pump and if there is do I need to run it?
duckaholic40sb
02-10-2003, 06:29 PM
yea the return line ont he stock pump is what keeps the pump motor from burnin up..also u have to bypass the oil pressure shut off, cause when the computer goes the brains for it goes with it and it wont let your truck run so u have to bypass it in the fuse box, its a white and brown wire i believe, just hope u see when your oil pressure goes to 0.
Ed
02-11-2003, 03:15 AM
What would it take to run a manual pump rather than the stock electric?