Hello everyone,

 I have a 1988 Ramcharger with a 318 (5.2) TBI 4 Wheel Drive Automatic.

 I am the original owner with about 60,000 on a Rebuilt Engine.

Recently I have been experiencing some loss of power very infrequently on the Freeway after Driving for a while. Fuel pump is relatively new and hardly any miles on the Fuel filter (Truck sits alot).Feels like It’s running at half power for about a minute or so. I usually get off the throttle for a second or two and it returns to running fine. I was wondering if it could be the Distributor as it is original but I don’t know how to check it. Timing mark is steady at Idle . I replaced the Throttle Body and I thought I got it.But it is happening again. Wires were replaced and replaced the Coil and Plugs 

 Thanks