74 d200 Question

It's on Akron/Canton CL. Punch up 1974 Dodge in the search. It's a cool truck. He paid 2500.00 about a year and a half ago. He is not mechanically inclined at all. The po told him about this issue when he bought it. I'm sure it wasn't as bad. He just took it fishing and drove it easy. It does have a trailer break so the po towed a camper probably if that helps with this mechanical mystery. It would match my green and white Duster!