no fuel

Have you got fuel pressure? Have you checked the fuel pump? Is there fuel in the tank?

brand new fuel pump if i disconnect the inlet line to the carb and crank over tons of fuel comes out just not through the tbi have over 1/4 tank of fuel about ten gallons

Throttle body injection is not my strong suit but if there isn't a signal to the injector, then I would tend to start looking there. The reasons are too numerous to list here. From a poor connection to a failed component.

tryed that getting a 12 volt pulse while cranking the motor over called chevy tech support and they couldnt help over the phone because of legal reasons

I am going to get a Chevy guy on this with you mate, help is on the way!

thank you very much

I went right to the top. One of the site admin is my good friend. Mike will dispatch the resident Chevy expert straightaway!

Are you getting spark ? if not and no injection -check and test the distributor pick-up coil-let me know

Probable cause could als be the computer ground driver circuit-Let me know

Thanks Ras!

Np there Doc, You have a great day and a sunny one-later BTW Mike gave me to look at it-I'll take from here-Bye

I will try that in the morning thank you. What should I be getting for voltage 12volts

Measure the resistance on the pick-up coil and for short to ground

Distributor Pick-Up Coil Short & Resistance Checks
Disconnect pick-up coil leads from HEI-EST module terminals "N" and "P". Set ohmmeter to middle scale, and connect one lead to either pick-up coil lead and other lead to distributor housing. See Fig. 9. Flex pick-up coil leads by hand to check for intermittent shorts to ground. If reading is not always infinite, replace pick-up coil.
Connect ohmmeter between both pick-up coil leads. Check for intermittent opens by flexing wires and connectors. If resistance is not 500-1500 ohms, replace pick-up coil.

Pick up coil is 722 ohms. And from either side to the housing it was infinite.

Do you have power at one side of the injector harness?

Is that either clip connection on each injector. If so when I crank the motor over I was getting voltage

Hook up a noid lite on the injector harness,if its not pulsing -check the injector driver circuit of the computer

I was getting a constant 12 volts. Where would the injector driver circuit of. The computer?

Its contained within the computer. Use a noid lite to be sure-you got power to the injector and the noid lite is not flashing think! computer

Ok ill try it. Thank you

Hooked up the noid lite. And nothing happened no light when cranking over