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Re: Fuel Pump - Time to Replace or Not??
So just replaced the pump and ran some tests while I still have the bed up. New pump made only a slight difference and pressure is still out of spec. 2psi more pressure and draws 2amps less.
Old pump:
52psi key On / engine Off
48psi at idle
56psi at idle when you pull the vacuum line from the regulator at idle
Amp draw 8.5amps
New pump:
54psi key On / engine Off
Flutters between 48-50psi at idle
58psi with vacuum line removed from pressure regulator at idle
Amp draw 6.3amps
Double checked the lines at the pump while idling and no leaks.
Maybe there is blockage somewhere in between the pump and rail?
I replaced the filter just a couple months ago.
Any other ideas?
Thanks.
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1995 Lumina LS Sedan 3.1L - 215K mi - Daily Driver
2002 Accord EX Sedan V-6 - 209K mi - Wife's Daily Driver
2000 Silverado LS RCSB 5.3L - 168K mi
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