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Thread: Fuel line "chatter". . . .
01-03-2013, 04:57 PM #1
Fuel line "chatter". . . .
So after recently replacing a fuel pump, I notice a chattering noise coming from my fuel line. Very weird.1999 Chevrolet Suburban LS K1500
1991 Chevrolet S10 4.3L 4x4
2005 Suzuki Forenza (GM/Daewoo)
01-04-2013, 12:11 PM #2
- Join Date
- Mar 2012
Fuel line chatter
You must have bought a non OEM AC Delco pump with out the anti pulse module. You will need to live with it.
01-04-2013, 01:05 PM #3
01-04-2013, 05:06 PM #4
the fuel pump should make a whine sound. with a chattering sound this may be from the pump suction hose having a leak or the regulator is not returning excess fuel pressure back to the fuel tank / restricted /crushed return line.
I would disconnect the return line at the fuel pump hose connector using some clear tubing direct this flow into a container and observe the flow. if lots of bubbles this may mean the intake pick up tube has a leak. if no flow or not flowing smoothly then it may be the return line or regulator stuck or pulsing.
the fuel pressure gauge should be steady not jumping to much also.
01-04-2013, 05:11 PM #5
Well the pump itself sounds fine. Its just down near the frame rails.... I just haven't had my garage clear enough to pull it in and crawl underneath it.
When changing the fuel filter it was a bit tough coming off...I am thinking maybe I tweaked the fuel line in the process.
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