Seems like the fuel pump in my 94 is making a lot of noise. Maybe I never noticed it before but is sure is humming now. Motor runs good, about 3 gallons of fuel in the tank.
Is this normal or should I change it out before it gives up?
NOISY FUEL PUMP
Started by
TEAM MEDICARE
, 08-24-2011 09:31 AM
#1
Posted 08-24-2011 09:31 AM
#2
Posted 08-24-2011 10:36 AM
"Noisy" is pretty subjective to diagnose. What is the fuel pressures at idle and full throttle? Is the pump keeping up with demand? You might want to keep a spare in your parts bin just in case.
James York
sponsored by:
Stan's Auto Center, Lafayette LA
powered by:
East Street Racing, Memphis TN
2003 Spec Miata
#03
#3
Posted 08-24-2011 11:20 AM
"Noisy" is pretty subjective to diagnose. What is the fuel pressures at idle and full throttle? Is the pump keeping up with demand? You might want to keep a spare in your parts bin just in case.
I know "noisy" is a wide open description. It's just that it seems to have started suddenly. Kind of suspicious.
I'm new to this. What pressure should I be looking for? Can I measure at the fuel sample port?
#4
Posted 08-24-2011 11:49 AM
I know "noisy" is a wide open description. It's just that it seems to have started suddenly. Kind of suspicious.
As you know the fuel pump is mounted in the fuel tank. It's not a big deal to remove. An electrical plug, two hoses & 6 or 8 small Phillips head screws. From the pump to output hard line there is a 0-ring kit. The o-ring could be trashed??? There is also one Phillips head screw that holds the pump to a bracket. This screw could be loose??? There is also a heavy duty o-ring that fits around the fule pump & the output steel line which could be streched or broke???
Find the fule pressure/check proedure in your factory shop manual.
#5
Posted 08-24-2011 12:37 PM
If you think after some inspection that the pump itself is noisy, I would replace it even if it's putting out good pressure now. It won't go bad while siting in the garage. If it fails it'll likely be while on the track which really sucks.
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