I have a 2000 GM blazer 4.3 6 Vortex

Asked by Mar 14, 2017 at 03:42 AM about the 2000 Chevrolet Blazer LT 4-Door RWD

Question type: Maintenance & Repair

I have a 2000 GM blazer 4.3 6 Vortex and it cracks
all the interior lights and the headlights comes on
but it won't start I checked all the fuse and non
blown I put some gas in the gas tank and some in
the carb to see if it even starts up but it did just a
few seconds but I did put wire on my battery and
one end of the wire touch the fuel pump fuse it
comes on I even hear it gurgle. Any suggestions
need help.

10 Answers


Sounds like you have a fuel pressure issue. When putting some gas into the throttle body, and it fired up means the engine runs, so it is not electrical. First change the fuel filter. Then start by checking the fuel pressure from the Schrader Valve with a fuel pressure gauge. Fuel pressure should be 56 to 63 lbs. Then do a bleed down test. With fuel pressure built up on the gauge, turn the key off and let it sit. Watch the pressure gauge. It should not drop more than 5 lbs in 3 minutes. You have a possible bad fuel pump, or leaking fuel injector assembly.

1 people found this helpful.

I will check the fuel filter and see if that's the problem I do appreciate for helping me

The pressure is not going to the Schrader valve but the fuel pump is on


If you hooked up a fuel pressure gauge, and are not reading any fuel pressure, and you hear the fuel pump running, then it is a bad fuel pump. I suppose you just pushed in on the Schrader Valve when the pump was running? It should spray out of there pretty good, if the fuel pump was any good.

Nothing came out of the schrader valve Maybe it's the bad ground or like you said it maybe the bad fuel pump


You had said the fuel pump was on. Never the less you have no fuel pressure.

Yes sir I did say that fuel pump is running but building no pressure to the schrader valve


Just change out the fuel filter in-case it is totally blocked, you can tell if you take it off and try to blow threw it, otherwise the fuel pump is no good.

I do appreciate it and thanks for ur help


You welcome.

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