Engine Mechanical problem
1994 Oldsmobile Achieva 4 cyl Two Wheel Drive Automatic 116k miles
I have 1 94 olds achieva and it ran and drove good until I changed the plugs and wires. Once done now it runs horribly and sounds like its missing. I replace the coil cover, plugs, wires, tps, map sensor it isn't throughing any codes. I started the car pulled the aiv sensor and tested the injectors cylinder 1 and 4 shut off car when disengaged where 2 and 3 did noting when disengaged from injector. Are my injectors bad. Any ideas or diagnosis please help!