i know ive posted this problem several times, but i have some new information. in short: my car refuses to run correctly and im fairly sure that ive eliminated everything but timing problems as a possible cause for its shitty-ness. whats happening is the car starts up and runs relatively normal but consistently backfires and misfires when you get on the throttle and literally has half the power it should have when im driving it. ive replaced the distributor cap and rotor, plug wires, and plugs because i thought maybe it was an electrical short/ weak spark issue but it seems to be getting plenty of spark. took the valve cover off and nothing seems to be sticking, valvetrain looks fine to me. the car is running rich (backfiring) but i dont beleive its a fuel problem. also, when the car is running i can completely unhook cylinders 3 and 4 and the car will keep running, whereas if i pull 1 or 2 it dies. i compression tested it and i have a clean 175 psi across all four cylinders, and from what i hear it should be between 160-180, so that sounds ok. the timing belt was recently replaced before i bought it and i hear if the tensioner wasnt replaced with it theres a possibilty that it can slip out of position causing timing to go bad. i want to look into this as a possibilty but the only idea i have on this is what im going to read in a manual and itd be great to have someone who knows what theyre doing to give me an idea of what to expect/look for. any help would be greatly appreciated.

thanks guys,
wes