Fuel Pressure Test
Thread Starter
New Member
Joined: 05-25-2012
Posts: 12
From: LA
Fuel Pressure Test
Can someone please explain the steps of testing my fuel pressure for my 2007? And provide a list of the tools I would need please.
Reason I want to test the fuel pressure is because,
Symptoms:
-P0171
-Drop in MPG
-Need to crank a few times for car to start.
Reason I want to test the fuel pressure is because,
Symptoms:
-P0171
-Drop in MPG
-Need to crank a few times for car to start.
Founding Member
Joined: 11-23-2007
Posts: 8,210
From: Texas
You need a fuel pressure guage with the correct fittings to hook to the service port on the fuel rail. YOU MUST RELIEVE PRESSURE FIRST. Should be 50-60 psi.
If you are still in power train warranty 5/100K it's covered by GM.
If you are still in power train warranty 5/100K it's covered by GM.
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