how do u know if your fuel pump is bad - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lilaznjeff · 10-18-2003, 02:19 AM

i was trying to start my car one day and the e brake light seatbelt light and the other ones went on
and when i was trying to crank it the car wont start
i took a look at my ecu
it was not throwing codes
and i try checking the fuel line took it out and put it in a waterbottle and there was no fuel coming out
and i try checking the alternator
i looks fine to me
can a stock fuel pump handle the sr20det
and also the car has 200xxx miles on it
could it be time to change the fuel pump
what would be a good fuel pump to purchase
the car cranks and all but it wouldnt catch

240sx couple
sr20det red top
greddy downpipe
custom exhaust
s13 front end
koyo raditator
hks bov
stock intercooler

rednerd · 10-18-2003, 02:32 AM

If you have no fuel pressure, it very well could be the fuel pump, but remember the fuel pump is powered by a relay that is fired by the computer. Make sure the fuel pump is getting power when you turn the key on.

Did you hear the fuel pump getting louder before it died? Could your fuel filter just be clogged?

If your pump is shot, upgrade to a 255lph pump and a 300zx fuel filter, just to be on the safe side of things.

lilaznjeff · 10-20-2003, 01:20 PM

when i change the fuel filter the fuel keeps on leaking out
but when i put the new fuel filter and put it, in on position there was not much (very little fuel coming out)
and also i checked all the fuses under the hood and interior too
all the fuse was ok
still til this point could it be the fuel pump

rednerd · 10-20-2003, 06:41 PM

Quote:

Originally posted by lilaznjeff
when i change the fuel filter the fuel keeps on leaking out
but when i put the new fuel filter and put it, in on position there was not much (very little fuel coming out)

Okay, so you changed the filter and still nothing.

Pull up the carpet in the trunk, you will find the fuel pump access cover and the electrical connector for the pump. Check to connector for voltage while someone turns the key to the on position. You should get power for 3 seconds. If you don't it's probably the fuel pump relay. If you do get voltage, it is probably the pump. Too make absolutely certain check for resistance across the pump (with the plug disconnected). If you get no resistance across the pump it is definately shot.

10-18-2003, 02:19 AM	#1
lilaznjeff Zilvia Addict Join Date: Sep 2003 Location: oakland Age: 41 Posts: 658 Trader Rating: (2) Feedback Score: 2 reviews	how do u know if your fuel pump is bad i was trying to start my car one day and the e brake light seatbelt light and the other ones went on and when i was trying to crank it the car wont start i took a look at my ecu it was not throwing codes and i try checking the fuel line took it out and put it in a waterbottle and there was no fuel coming out and i try checking the alternator i looks fine to me can a stock fuel pump handle the sr20det and also the car has 200xxx miles on it could it be time to change the fuel pump what would be a good fuel pump to purchase the car cranks and all but it wouldnt catch 240sx couple sr20det red top greddy downpipe custom exhaust s13 front end koyo raditator hks bov stock intercooler

10-18-2003, 02:32 AM	#2
rednerd Zilvia Member Join Date: Aug 2003 Location: Massachusetts Posts: 180 Trader Rating: (0) Feedback Score: 0 reviews	If you have no fuel pressure, it very well could be the fuel pump, but remember the fuel pump is powered by a relay that is fired by the computer. Make sure the fuel pump is getting power when you turn the key on. Did you hear the fuel pump getting louder before it died? Could your fuel filter just be clogged? If your pump is shot, upgrade to a 255lph pump and a 300zx fuel filter, just to be on the safe side of things.

10-20-2003, 01:20 PM	#3
lilaznjeff Zilvia Addict Join Date: Sep 2003 Location: oakland Age: 41 Posts: 658 Trader Rating: (2) Feedback Score: 2 reviews	when i change the fuel filter the fuel keeps on leaking out but when i put the new fuel filter and put it, in on position there was not much (very little fuel coming out) and also i checked all the fuses under the hood and interior too all the fuse was ok still til this point could it be the fuel pump