My TBI 1991 305 does not fire when cranking. Until the battery starts going dead. Which is then turning over at a slow revaluation. But it's still yellow (no fire). Is it my pick up coil? Or timing?

Asked by Feb 28, 2015 at 07:06 AM about the 1991 Chevrolet C/K 1500 Scottsdale Standard Cab Stepside SB

Question type: Maintenance & Repair

Swap ECM/PCM COMPUTER.
Sense I'm going to a 305. From a
350. Or just wire a knock sensor into
the original ECM.

2 Answers

237,115

Not sure what you got there on the new wiring. Do you have spark at the plugs? How is the fuel pressure?

46,195

Posting your question 6 times will not help get any answers.

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