Fuel pump
Thread Starter
Instructor
Joined: Nov 2012
Posts: 124
Likes: 3
Fuel pump
Hello guys. Still another problem with my 71 bb. Recently put a small holly 600 on it. It has been sitting for about a year working on it. Fin ally got it cranked a couple of weeks ago with the help of a couple of you good people out there.
cranked it up today and backed it outside to fiddle with the timing. Shut it down and tried to crank it back up and it wouldn’t. The inline fuel filter showed no gas in it so checked gas tank which was empty. Put more gas in and tried again. No go. Pulled line off carb and turned motor over, no gas coming through line. What could have happened so quickly? Can fuel pump go out that suddenly? Any ideas? I did replace current pump a few years ago.
thanks Fred
cranked it up today and backed it outside to fiddle with the timing. Shut it down and tried to crank it back up and it wouldn’t. The inline fuel filter showed no gas in it so checked gas tank which was empty. Put more gas in and tried again. No go. Pulled line off carb and turned motor over, no gas coming through line. What could have happened so quickly? Can fuel pump go out that suddenly? Any ideas? I did replace current pump a few years ago.
thanks Fred
Racer
Joined: Mar 2005
Posts: 393
Likes: 3
From: Dallas, TX
take off the feed line from tank to pump at the pump and see if any fuel comes out, if so then the pump may be toast, could be a clogged fuel line if its been sitting a long time, may not be the problem but it's free to check vs assuming the pump is shot and wasting money on a new one.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,105
Likes: 9,236
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Having no money and not much brains as a teenager I ran my tank dry quite a few times so I have experience with this.....On these old cars sometimes you need to prime the carb with gas to get it to run long enough to get it to come through the pump once you run it dry. Either squirt a little fuel down the throat or fill the carb through the vent tube and get it to fire. You should be okay.
PS I've had a good handful of carter fuel pumps fail and the only way to tell is with a fuel pressure gauge. They would still pump but only 2-3 psi instead of 7-9 psi
PS I've had a good handful of carter fuel pumps fail and the only way to tell is with a fuel pressure gauge. They would still pump but only 2-3 psi instead of 7-9 psi
Last edited by Rescue Rogers; Nov 7, 2019 at 06:28 AM.
Thread Starter
Instructor
Joined: Nov 2012
Posts: 124
Likes: 3
Thanks for the ideas. Being semi lazy I tried the easiest first. Filled the bowl it fired and kept running. Great. Wasn’t looking forward to replacing the pump. Now I can work on straightening out the timing. May need your help again.
thanks guys.
thanks guys.
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,105
Likes: 9,236
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Sometimes the easiest and obvious answer is the right one. Glad it was a quick easy solution.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Racer
Joined: Mar 2006
Posts: 448
Likes: 6
From: ALLEN Texas
Before you buy a new electric pump, check the wire going to the pump.
It needs to be at least a #12 wire, (10 would be better). Also a #10 ground.
Many pumps have been returned as bad when all they needed was better wiring.
Ray
It needs to be at least a #12 wire, (10 would be better). Also a #10 ground.
Many pumps have been returned as bad when all they needed was better wiring.
Ray