truck runs smouth until you give it gas

Well, it's OBD1, so you're not going to get codes. Most often this is caused by having an engine that just needs a good tune-up. and that would include new air and fuel filters. If it's not that simple, it might be a bad sensor, injectors, or clogged catalytic converter. You need a mechanic to find out WHY.

Well, it's OBD1, so you're not going to get codes. Most often this is caused by having an engine that just needs a good tune-up. and that would include new air and fuel filters. If it's not that simple, it might be a bad sensor, injectors, or clogged catalytic converter. You need a mechanic to find out WHY.

Well, answers not posting again, so I'm through for the day, or week, or month...

What do the plugs look like ? Check for loose/broken vacuum lines/leaks , Spray some carb cleaner down the throttle , check fuel pressure , Does the motor rev when you give it gas in park ?

Sounds like it could be spark plugs breaking down, ignition wires going bad, carbon track in the distributor cap just a lot of things it could be.

Ground to the coil(s) may do that, overall spark is weak, we can check for that~