I recently inherited my grandfather's truck, 84 gmc sierra classic 305 2wd 264,000 miles with zero engine work before now.
I've been having some carb issues out of it, but now I have a more serious problem.
Driving on the interstate the other day I lost power. Got off the road and popped the hood to find a belt broke.
Towed it home and changed out all the belts. Now at idle I have a horrible knock, also it is idling higher than it should. When you try to drive it, it has no power. At idle I have oil on the dipstick, but after turning it off and letting it sit, no oil is present on the dipstick. At idle I have between 30-40psi oil pressure and slightly higher under acceleration. In neutral it will accelerate up but will not in drive or reverse.
Any clues or directions to go in I'd love to hear. I'm afraid it may have thrown a rod.
