> So I've solved the problem. I went to the local
> auto parts store on my lunch to pick up a car
> condenser. Tge guy in the shop gave it to me for
> free, he said he has loads of them and can't
> remember the last he sold! The bike was running
> very slow on the way even from cold, with little
> to no power up hills. I got a new spark plug from
> there and swapped it out on the car park. It made
> no difference and on the way back it was worse
> than ever. It seemed to be running very lean as it
> would just lean bog on anything but a quarter
> throttle. I removed the new plug and sure enough
> it was white. I stripped the carb on the car park
> which was contaminated from years of standing
> (last on the road in 86). It didn't seem to make
> any difference and then I noticed that the bike
> was way too quiet. I whipped the muffler off and
> it was full full full of carbon. I went a bit mad
> with the hammer as I had very limited tools and
> unclogged it as much as I could. Anyway the bike
> is now running faster than ever, I'm not sure if
> it was just the exhaust or a combination of the
> two but it seems good. I messed around with the
> idle circuit screw when I was fettling and now it
> doesn't tick over that well, cutting out after
> around 15 seconds. Should the screw set the speed
> or should I adjust it using the cable tensioner?
> Thanks for the help and advise !
The idle screw should control the idle, don't use the cable adjusters unless there is too much slack in the cable.
Get a new exhaust.