what are signs of a bad fuel pump.

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Old Jun 16, 2013 | 03:32 PM
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Z0831xiz's Avatar
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Default what are signs of a bad fuel pump.

I hear my fuel pump prime on when I hit ignition on my car and I'm currently having starting.problems like before at a stop the car would cut.off and die .
But also now my car just rolls over I got a new fuel filter no go.
New injectors for my engine d16a6 (mpfi injectors) still no go. I have a slight fuel leak from my fuel rail but I want to out rule its my.fuel pump. Thanks!
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Old Jun 16, 2013 | 03:55 PM
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Default Re: what are signs of a bad fuel pump.

First I would check main relay if its good then I would check fuel pressue if its way low even if you got enough gas then pump could be on its last leg
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Old Jun 16, 2013 | 04:46 PM
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I tried 3 main relays

I tried a new fuel filter.

I tried a 2 set of fuel injectors (d15b7) & (d16a6)

I tried another mpfi obd0 ecu. (pr4 integra)

I Also tried checking for vaccum leaks. and changing map sensor.

nothing. but I have 2 final ideas my timing belt seems a little lose how I see it. I can push it over too 3 extra teeth on came gear.

and my other idea is my fuel pump both annoying jobs.

before I drop the gas tank and change a fuel pump I'd like to know if thats what it is..


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Old Jun 17, 2013 | 03:53 AM
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I would drop tank, maybe sock filter clogged? Anyhow, dropping the tank isn't really hard on these cars. In hindsight I would check fuel pressure first then on to tank if its low.


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Old Jun 17, 2013 | 05:14 AM
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Default Re: what are signs of a bad fuel pump.

taking a bath in gas for nothing doesn't seem fun, I would put a timing light on your car. what do your spark plugs look like? spark plugs Tell all. perfect time to buy a fuel pressure gauge... or borrow one from advanced auto parts. check the resistance across your pump leads via the plug under the back cove that leads to your pump. dropping your tank sucks, 20 ways to check your pump without doing it.....
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