new fuel pump and fuel filter and no start

Asked by kooda Feb 22, 2015 at 02:46 PM about the 2003 INFINITI QX4 RWD

Question type: Maintenance & Repair

I replaced the fuel pump and fuel filter and it still wont start

5 Answers
157,485

Bob answered 9 years ago

Do you have spark? Is the fuel pump making a brief noise when turning on the key?

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bhallmechanixllc answered 4 years ago

Your crankshaft position sensor tells the ECM to put power to the relay that allows power to the pump. Put a multimeter at the two prong connector going to the pump and turn the key if you do not get voltage the crankshaft sensor is out.

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Christian answered 3 years ago

EVAP canister purge valve. My 01 Qx4 wouldn’t start as well. And I knew it had to do with the fuel system.. so i replaced that. And it started. It’s been like 2 months and i now have to replace my fuel pump. (Won’t start if I have more than a 1/4 tank of gas). Hope that helps

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