98 Buick Regal GS Code P0303 Misfire HELP!
I have a 1998 Buick Regal GS with the 3800 Supercharged motor throwing a code P0303. I have replaced the spark plug and wires, took injector from cylinder 1 and put it cylinder3 place, Also I switched the coils same code comes up. There were some chaffed wires on injector #3 - so I taped them up as to not short them out. I checked the spark on #3 and there is spark, I did not check the compression with a compression gage but it seems to have good compression when I pulled the plug and turned the motor over.
There seams to be noise coming from the blower as well. This noise just started yesterday.When I pulled the belt on the blower the noise stopped. That was not a surprised. I would not think that the miss fire has anything to do with the the blower problem. Any sugestions on why number 3 cylinder is misfiring and keeps throwing a code P0303. BTW, the SES light is now own. A while back I cleared the codes and the code and the SES stayed off for a while. When I clear the code, only to come back when the motor is started.
Thanks for any suggestions