(qr25de) CEL is on throwing p0300 random misfire and p0304 misfire cylinder number four. At idle it runs very rough and you can hear a "putt" in the exhaust, there is no smoke or rich smell. While driving and accelerating it jumps and the CEL flashes.
All I have done so far is replaced the spark plugs. The coils that connect to the plugs look very clean and I cannot find any burned or rubbed through spots on any of the wires.
have the same problem?
Saturday, March 4th, 2017 AT 11:40 AM