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Daz at the bike shop couldn't even start it. I'll find out more today. :-(

Another thought is generator breaking down, apparently that could cause my symptoms....?

Lloydie checked the TPS - and we also did a complete carb swap. Pulse generator - is that the ignition trigger?

Well, Lloydie and I (mostly Lloydie to be honest) spent a good 3 hours plus. Swapped carbs, igniter boxes, front coil, fuel tap, there appears to be a circuit between coil and igniter box. Still no change. It just won't rev past 3,000 - dropping onto 1 cylinder. You can hear the front popping and ba...

Thanks for your help, and giving up so much time on a Sunday. I think we must have swapped half the bike in the end!

Not that I know of Kev, I've never fitted one - but will check that out too!

Could it be summat as daft as that! I'm sure it's the front that's misfiring! I'll see if I can borrow a jerry can to drain it down (or Pauline's car!) I have a jiggle siphon. Do you have my address?

Slides are both free. Had tank off last night :-( My only observation was there was no fuel came out of offside fuel pipe, which Cyl does that feed? It might just be gravity as bike is on side stand. When I take the tank off again, I'll give the vac pipe a suck to see if it flows both sides. I'm sur...

I put OEM coils back on, same problem as the stick coils. I think it's something on front cylinder. I wonder if it's a needle sticking? It ticks over ok, but pops and bangs as you pick revs up. By 3,000 it's failing, 4,000 revs and it's dropping to 1 Cyl. Put load on it, and it drops to one quite ra...

So, new plugs in and all the hoses checked. Still misfiring. I'm running out of ideas and patience. It can only be the carbs. I think I might have to pass it to the experts.

Good thought. I had trouble with the crankcase breather, and the other line (braided pipe, venting to tank) has been swinging round since I bought it.

I'll give the plugs a go. Riding is out of the equation - it just won't pull. On one Cyl soon as I try any load....

Obviously I have disturbed the connections when I changed to stick coils. How would I check that - is it not a pulsed voltage?

Just the one cylinder. The front I think - that's where the farting seems to come from. Plug was quite sooty too. I tried a spare, only had an ordinary DPR9 though.

What could be the cause of a misfire under load (literally just after pulling away) a real poppy, farty misfire. Lots of backfiring. Ticks over fine. I'd swapped std coils for stick coils - and had taken tank right off onto Ps bike. Have gone back to OEM coils. Still misfiring. Rechecked all hoses. ...