Truck wont start

Asked by Jan 24, 2017 at 07:11 AM about the 2003 Chevrolet TrailBlazer EXT LS 4WD SUV

Question type: Maintenance & Repair

I have a 2003 chevy trailblazer v6 4.2 my
fuel pump is good.my fuel filter is good my
relays are good..but my truck still wont turn
on.once i put a rag with gas near the filter
goes it turns on but goes right back off once
it sucks the gas out...pleasseeee helpppp

3 Answers

109,745

Yes it will because your fuel pump is not pumping enough gas pressure to the injectors, you need to put a gauge on the rail and see what the pressure is. You will also need to look at the fuel pressure regulator...

109,745

https://www.youtube.com/watch?v=sGDG4LkdzFU

109,745

The pump pressure is I believe 55 PSI

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