1 Misfire under load, Mon Oct 17, 2011 2:36 pm
bandaid
active member
I have cleaned or repalced virtually every connection on the bike now, and apart from this missfire, its all fine. The bike starts and runs a treat if its in neutral, free revs up to the redline without complaint, however, when its under load, like in gear, it goes to 3500-3700 and misfires badly.
When in neutral I get good spark at all 4 cylinders , I confess I havent had the courage to pull the plug lead off at 3,00+ revs..I think the plug leads maybe original, and perhaps 1991 is ages for a high tension lead to last, and its time for replacement. It maybe that this cures the problem, but I thought I might ask if anyone has any other ideas I can try before or after the lead change..thanks guys.
Oh, its had new plugs in the past couple of months , so although its possible that one of them is duff, I cant remember having a bad plug from new for years on other vehicles.
When in neutral I get good spark at all 4 cylinders , I confess I havent had the courage to pull the plug lead off at 3,00+ revs..I think the plug leads maybe original, and perhaps 1991 is ages for a high tension lead to last, and its time for replacement. It maybe that this cures the problem, but I thought I might ask if anyone has any other ideas I can try before or after the lead change..thanks guys.
Oh, its had new plugs in the past couple of months , so although its possible that one of them is duff, I cant remember having a bad plug from new for years on other vehicles.