My Truck Turns Over, Engine Wont Start, Although It Starts Sometimes Electrical Problem

I have a 1990 chevy cheyenne pickup, i got in to go to the store and it started fine, when i got back in to start it it was doing the same thing as yesterday my buddy and i cleaned off the knock sensor and it worked fine for a day, now its just cranking and not starting, it has enough gas in it and the spark plugs work whats going on?

Answers for The Question

  1. Paula H
  2. Gatoblue000
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