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I have a 1994 s10 it had a 4.3 tbi I took it out and put 2.8 tbi out of 1986 I get fuel to the tbi and power to the injectors but the injectors wont spray gas out of them but the fuel pump is workin but won't start but I drove the 86 to the shop befor I pulled it it worked great

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You need the computer and the harness or you have a ground issue test for injector pulse with a noid light

Posted on May 17, 2014

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SOURCE: Help w 1994 chevrolet truck

disconnect the batt. is your fuel pump running check fuse listen for it

Posted on May 28, 2009

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SOURCE: 92 chevy 1500 5.7 tbi starts and dies. replaced

Try using a good fuel line/injector cleaner Seafoam is a good one. If this does not help you may have tone or more clogged injectors. Clean these out and you should be good to go. tTo see Seafoam in action goto you tube type Seafoam into the search box.

Posted on Jul 08, 2009

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This injector set-up needs a specific fuel pressure supplied to the fuel rail to even start, much less run properly. The fuel pump is immersed in fuel inside the gas tank to keep it cool and not burn up. Running the fuel level low causes more heat in the pump and interuptions in proper fuel pressure. AC/Delco pumps have proven to be a reliable fix, the aftermarket pumps only last for a month or two sometimes. Check fuel pressure under the hood and power and ground to fuel pump at electrical harness at top of gas tank. This truck needs a fuel pump.

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