bad miss at idle . on 93 camry?

got oil change drove 20 miles down the road the car started missing at red light. no engine lights. went back to oil place mechanic checked out we pulled #2 wire at idle no change. he thought it was a fouled out plug & not their problem. went to auto-zone bought new plug (just put in new platinum plugs 1000 miles ago)ran better but not good enough. was told by counter guy that an injecter was prob. stopped up.was told to run a can of sea-foam to clean injecter,did that drove 150 miles topped off fuel. the car was running worse. so i found rebuilt injecters on the web at inj. warehouse in s.c.ordered a full set installed,same problem , back to squ.1 was told that fuel filter bad replace . was told low compression , tested 160-165 per cyl.car will run but #2 doesn't kick in until about 2100 rpm. then sporatically.replaced wires & cap.yellow spark when plug wire is held away from metal. replaced dist/coil assembly same problem.can the computer be the problem i need this car to get to work ,any suggestons?