I've been working on my 99 K2500 Suburban off and on for about a year now. When I bought it, the previous owner had broken a starter bolt in the block. That screwed up the flexplate. Since that needed to be replaced, the starter bolt needed to be drilled out and retapped/helicoiled, the oil pan gasket needed to be replaced, I pulled the engine since all the above are easier with it out of the truck. Prior to me pulling the engine I'd replaced the distributor, plugs, wires, ignition coil, ICM, and injectors as well as the fuel filter and fuel pressure regulator. It had a miss on #s 3 and 4. Pulled those injectors, tested them, and they were fine. Compression was good on all 8.
I've also discovered multiple other issues after pulling it. Leaking rear main, leaking front seal, the oil filter adapter was leaking and apparently rtv was the solution. The balancer needs to be replaced, and after looking at the timing chain it's got quite a bit of slop in it so a new set is on the way. I'm tempted to have it rebuilt or buy a long block but that's not really in the budget at the moment. All that being said, can the bad timing chain cause misfires on specific cylinders? Do I need to look at the valves as a cause of the misfires? I'd like to do a leak down test but it's a ways away from being put back in the truck especially with my limited mechanical abilities. Sorry for the long winded post I'm just trying to give as much background as possible.
I've also discovered multiple other issues after pulling it. Leaking rear main, leaking front seal, the oil filter adapter was leaking and apparently rtv was the solution. The balancer needs to be replaced, and after looking at the timing chain it's got quite a bit of slop in it so a new set is on the way. I'm tempted to have it rebuilt or buy a long block but that's not really in the budget at the moment. All that being said, can the bad timing chain cause misfires on specific cylinders? Do I need to look at the valves as a cause of the misfires? I'd like to do a leak down test but it's a ways away from being put back in the truck especially with my limited mechanical abilities. Sorry for the long winded post I'm just trying to give as much background as possible.