Went to take my R300 Duratec out for the first time since last year, but after a few hundred yards a missfire started and got progressively worse. Got home and pulled out the plugs, they're all really black and sooted. I changed the oil and ran it up to temp on the drive a couple of weeks ago, it seemed to run fine but obviously not under load. It's still got last years fuel in it, but never had a problem before. Anyone got any suggestions of where to start. Could the Lambda probe cause this? My MOT tester suggested it might be on it's way out last year.
24th Apr 2019 - 15:12#1