Got the bike running, after changing the 'O' Rings, so that's good news. I do have a problem with the Number 2 cylinder, it runs about 45-50 degrees cooler than the other pipes when warming up and idling. I changed the plugs around then changed the leads over from 2 and 3 but it doesn't make any difference. I took the pilot jet out and cleaned it up a gain but that made very little difference.

If I remove the pug caps when idling from cylinders 1,3 or 4 the bike stalls or very nearly stalls. If I remove number 2 plug cap it makes very little difference. I have tried altering the pilot screw but again that makes little difference. I think there must be a passage blocked in the carb body in the pilot system. Anybody got any other idea?

Btw when on the road it runs well revs cleanly.

Gazz

I agree mate, if youve swoped plugs and leads with no joy cheek the carb over again.

Look at the carb balancing, I had a cold pipe when I first got my bike and thought the worst but it was just a balancing issue.

Sadly Awynn the balance is good , thanks for the suggestion tho.

Gazz

Next thing I would look at is checking compressions to see if that cylinder is low compared to the rest, if it is low then it might be valve clearences with any luck. If that checks out ok then it leaves the carbs or the ignition and you already ruled out the ignition by swapping over the 2 and 3 leads so by the powers of deduction it would have to be a carb issue surely??