Question about 1988 Chevrolet K3500

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I have an 1988 chev 350 5.7 liter , my injectors will not work, there is fuel getting to the tbi, but somthing is telling them not to open, it was running bad now no fuel, i unpluged the map sensor. and esc. and a bunch of other things. no fuel whats up

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  • Anonymous Apr 04, 2016

    check pick up coil

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You should have over 9psi while cranking with injectors working to start. if there is not enough presure it will not start. The computer tells the injectors to open, it actually controls the ground side of the injectors with power side always hot. the computer NEEDs the map sensor or it will not start, it needs crank and cam location sensors from the distributor, the TPS, etc. Plug all sensors in, check fuel presure, clear codes and start over, checking codes to determine what isn't working.

Posted on Sep 30, 2009

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I had an issue much like this with my Montero. By accident I found that four of the six fuel injectors failed, leaking heavily. In my case I could get the truck started after it sat several days (drying the cylinders out) after which it would run though poorly. I have since replaced the injectors and she runs/starts fine.
I hope this may assit you,
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