I recently picked up a 98 gsr and got scammed pretty good i think. The dude pulled the check engine light out of the cluster so i wouldnt know and reset the codes when i got there. Anyways it has a cylinder 3 misfire and ive had a hell of a time figuring it out. Ive replaced spark plugs/wires, cap and rotor, fuel filter and fuel injectors. What could it be?