tshock250

Can you swap with another carb? At least you will know that's the problem if it runs ok.

I would be dropping it off at factory kev's, then picking it up when its fixed & go riding.

1k stator!! Was it gold plated!! glad it was an easy fix for you??

The floats are the problem then, look at why they block the fuel & go from there.

Could also be a stator problem, ok when cold but fails when warming up. Had this happen to mine.

The 93 JT has upside down forks.

No manual with the bike?

Have you strobed it to see what the timing actually is?

Or it is spinning but its shifted to the point where the timing is screwed.

If the previous owner thinks that's ok then I would be thoroughly checking the rest of the bike before going out on it.

Maybe your settings are too soft? ive had 3 betas & none of them are prone to tucking the front, what sag are you running?

Sorry, I think we've finished now

Now im thinking was the 200 a 163cc? Im really starting to lose it now.

Yes I know very well the differences between the GT & the JT, I had new gassers in 93, 95&96. You are absolutely correct in that his bike is a GT frame. I just cant help remembering something about the 160 using different forks or frame for the year, the official brochures say otherwise though so have to concede it may have been something one-off using left over parts maybe. Time has blurred the memory! Although I do remember them being 143cc though so that's something you've forgotten too

The 160 used the previous years frame but with the 94 forks back then I believe, so it's possible you are right bungle.

Unless you love it or you are absolutely broke then get rid of it & get something newer & more reliable, these bikes now are very old & can be a big headache to fix multiple problems. Its worth about £300 max. £1500 gets you a way way better machine. I understand if you have a very limited budget however.

Can also recommend nano trans in the beta, best oil I've used for the clutch.

Stuff an old rag in.

Nice bike, crying out for a set of original mudguards though, hopefully someone will produce replicas one day.

Wow, that's a rare old beast. Almost certain its a Delta, plastics would originally have been white (1990) or green/purple (1991) Looks like a delta engine plus has other delta parts on it so pretty sure that's what it is.

Can you post a picture of the bike so we can see exactly what you've got?

Take the fuel line off, then operate the tap so you can check if the tap is working, it takes longer than 30 secs for the engine to use the fuel in the float chamber at idle.

Who did it & did they use new o rings/gaskets? Has it had this problem since the top end rebuild? Think I’d be having the head off after checking the impeller.

When I had one of these there was an issue with the header tank cap not sealing. This in turn allowed boiling/overflowing of coolant. Some riders fitted a large jubilee clip round the cap to squeeze it tight against the header tank threads. As above though, it could be any number of things on a gas gas of this vintage, they weren't built well back then, its a brave move buying one now.

As above, 80:1 full synthetic & nano-trans gearbox oil. No clutch issues using that.