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Thanks guys for your help. It was a weak fuel pump . I ran it straight on a dummy tank again Saturday and it ran on all 4. Looking at the points on th…login to view the rest of this post

Thanks Alex. Had not thought of that will put, the dummy tank on straight on to the carbs and see if we get back to 4 cylinders and take it from ther…login to view the rest of this post

Thanks jompy it's a strange one I will keep working through and hope we find something built a kit car a few years ago so it's good to get the spanne…login to view the rest of this post

Many thanks for the advice will have a look tomorrow morning and let you guys know . Forgot to say we had a lot if unburnt fuel in the exhaust with all the mucking around when it did run on 4 we had an almighty bang like a gun going off so powerful a sign 8 feet away fell off the wall !!!
We ...

Hi guys
Can you help we have 98 r1 that only runs on cylinders 2&3 started one morning , fine the day before son inlaw replaced plugs and this cured i…login to view the rest of this post

Hi all
Joined forum for help with a bike. Future son inlaw has a 1998 blue r1 in good nick and he loves it.
I have a St1050 but that is another story .Anyway the bike has a problem it only runs on cylinders 2&3 and we have tried to fix it without success so I thought that you guys are the best to ...