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Will a bad CTS cause this? I'm honestly not sure, but that was my first thought.
You have a carb ??? 93 would have had TBI and not a crab. Has your truck been converted to a carb. If so, what distributor do you have ? This is all info we need to help you solve your problems.[/QUOTE
Yes sorry it is a tbi
What was your pressure?
My money is on ignition coil. I've had 3 different vehicles do this to me and all ignition coil