Jackhank007

I just changed the fuel pump and filter, now it won't start does anyone have any ideas
Thank you in advance for any advice

richtazz

Why did you change the fuel pump in the first place? Did you have the battery disconnected while you did? Have you checked the fuel pump fuse and relay?

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Jackhank007

the fuel pump was shot
the battery was disconnected
all of the fuses are ok

Jackhank007

I've tried to use the 2 second on, 10 second off routine but that has not worked either

Daghara_terry

check wire to fuel pump

richtazz

1st thing you need to check is if fuel pump is coming on. Listen at the tank when the key is turned on. If the pump doesn't come on, the new pump or relay could be faulty. Next, check fuel pressure at the rail. Should be 31-34 psi, key on/engine off (if lower, new fuel pump could be faulty). Start car, should drop approx 3-4psi, then disconnect vacuum line to fuel pressure regulator, should shoot back up to key on/engine off reading or slightly higher (if readings don't change, fuel pressure regulator is faulty). If fuel system passes ALL above tests, your problem is most likely ignition related and just a coincidence.

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