I'm at an end trying to figure out what has been causing this so maybe you can help. I'm not extremely savvy car wise. This is kind of a learning experience for me.
But I had the car (72 240z L28et w/ megasquirt and EDIS) running fine and tuning the idle. Then I quit for the day, tried starting it up and it was hesitant. Once it finally did it was running really rough and seemed to be misfiring. I've gone through everything trying to figure out what is causing it, I get spark on all the plugs, injectors are all good, swapped EDIS and coilpacks, reloaded firmware on megasquirt, changed battery and alternator.
Like I said it almost sounds like a misfire and when I pull the plug on one of the two middle cylinders it smooths out like it was running before...the only thing I can think of is that the head gasket is blown between the two and when one ignites it lights the other...but then again I have no clue and would like to steer away from pulling the head right now.
Would appreciate your help