I have a 1992 chevy 2500 with a 350 in it. It is cutting out/hesitating when driving over 40 mph and it gets worse when under a load. Idles and starts fine and no issues when just revving it up. I have replaced the cap, rotor, distributor, and plug wires. I am at a loss for what it is.

Any body have an issue similar to this or any ideas as to what it could be?

Any help would be greatly appreciated!

 

Have you replaced the fuel filter?

Allan

 

I'm going to do that tomorrow morning.