I did old fashioned fire test. Removed #1 wire and stuck screwdriver in it and placed near frame. Spark seemed fine but I replaced plugs, plug wires and coil pack anyway. Still doing same thing.
It is running rough as though it is misfiring or running out of gas-jerks. Going down highway jerks intermittently then smoothes out then jerks again. Somedays when started doesn't seem to miss a beat, somedays engine misses horribly. But always jerks a little here and there as though misfiring.
Could this be the fuel injectors? Is there a test I can do at home on them to see if they are working properly? Or should I just replace them and see if that is what the problem is. This engine uses no oil and oil stays new looking from oil change to oil change. I've run 3 or 4 cans of B-12 through it and another " best you've got" injector cleaner I got from the automotive store. I cannot afford 100's of Dollars of repair costs and hope to fix this problem myself.
Please, what can it be?
Thank you to ANYONE who can help out