Have a 94 Chevy pickup 4.3 liter throttle body injection unit been sitting for couple years cuz bad trans . during couple years I started it up couple times and idled smooth. I finally changed transmission and now it won't start. I disconnected fuel line behind TBI and fuel pump is working but it won't fire. Would it be injectors? Or how can I test those injectors ? The injector wires have 11.8 volts. Also disassembled injector housing and nothing was plugged up. Truck always ran smooth. Could it be bad gas? All fuses are good

80

Asked by Dec 24, 2014 at 11:25 PM about the 1994 Chevrolet C/K 1500 Silverado Standard Cab Stepside SB 4WD

Question type: Maintenance & Repair

3 Answers

80

I checked all wire connections and vacuum lines everything is connected I'm thinking its just weak gas . we added about 3 gallons of fresh gas but no treatment. Fires with ether but wont stay running

19,235

Make sure the oil pressure switch is plugged in. Are the injectors spraying?

80

Ya I found my problem. The injectors were spraying just not enough I guess. We dropped fuel tank and a rubber hose on fuel pump was rotted and had a hole in it and the rubber was plugging the pickup tube. We changed little fuel hose and cleared the line and the truck started right up

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