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Re: 1996 gmc sierra 4.3l fuel injection
It sounds like a fuel contamination problem or fuel filter/pump problem. Did the problem start after a recent fuel fill, if not, has the fuel filter been changed at any time, if so, check fuel pressure. Pressure should be 30 to 40 pounds.
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It does not have a carburetor, its fuel injected. Chk, fuel pump pressure, fuel pump status, fuel filter, and make sure its not out of fuel. if all is ok, injectors for correct function.... noid lights or stethoscope. check cylinder balance for ignition.
Hello. The GMC Sierra has an electric fuel pump so you should ensure that its fuses and relays are working before checking it. You may need to clean your fuel pump or replace it if your gas tank is not empty, but your vehicle has difficulty getting fuel. The GMC Sierra comes in a variety of styles and trim levels that can affect the replacement fuel pump you choose.