Wow this is my third "oh ****..." post in the last week. I hate asking without contributing but...
When I was flushing my cooling system and replacing the thermostat housing, I found that I had somehow broken the hose to the fuel pressure regulator. I notice that that hose is listed on shogun's rough idle and shimmy guide so I figured thats whats caused the rough idle I have now (I jammed the hose back on there but it probably has cracks in it). Basically my car ran smooth and now runs like crap and at idle SERIOUSLY rocks the car. If that vacuum hose had small leaks cause enough of a difference to make the engine run rough accelerating (i though FPR mainly worked during deceleration).
The reason i'm asking is in this process I also put a lot of pressure on the fuel rail accidentally when pulling the t-stat housing off. I might have broken something on the electrical connection to injector 1, but that seems unlikely. BASICALLY, does it sound like I might be running on 5 cylinders now? Or should I quit asking and just pull the damn fuel rail