I just had a y8 head put on my car (i didnt have time to do it myself) and the car is running on 1 cylinder. I am guessing this because i took plug wires 1,2 and 3 out and the car ran the same, sounding like a lawnmower, if i pull the number 4 plug wire out (other 3 connected, the engine dies) The car is REALLY slow. THe guy couldnt ger the oil control jet out of the block so that might be part of it, also im still running my crx fuel pressure regulator untill i get the right one. I checked the spark and the plugs, its all good so whats up? A little insight would be nice thanks. BTW I have an 89 crx si.