Car not starting I have replaced the fuel pump

DANIEL PARKER2

MEMBER
1998 CHEVROLET CAVALIER
2.2L
4 CYL
FWD
AUTOMATIC
185,000 MILES

I have replaced the fuel pump, EGR sensor, and checked the in dash fuses. I even tried to read the codes (nothing shows up) and the car still will not start. I have a spark from the plugs, not sure if the fuel pump relay is any good. For some reason, the throttle body is not getting any fuel, but you can smell the fuel build up. What could be the problem with this?

Thursday, November 17th, 2016 AT 9:34 PM

1 Reply

SQM

MECHANIC
6,383 POSTS

Hello,

If you can hear the pump coming on but not getting any fuel to the injectors, it could be due to a restriction in the fuel line. It can also be due to a faulty fuel pressure regulator.
A bad regulator can prevent fuel flow to the injectors.
It could also be due to a dirty fuel filter.

The fuel pressure regulator is located on the fuel rail (see diagram below).

Checking the fuel pressure would be a good first step. This can help you determine if there is any fuel going to the injectors.

This vehicle should have 41-47 PSI of fuel pressure, with the key on and engine off.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.

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