bad news...
went to Bikex to get a new jet, only to find that they hadn't got any. and on the way back it died whilst going up a hill. no coughs, no nothing, just there on minute and the next it had completely cut out.
that was possibly the longest walk i have ever done, and even with a small bike its hard to push it the remaining 3 miles home.
took the head off when i got home and there were no signs of lean running, the plug was wet with fuel, with a dark brown colour on the cylinder head and piston (no obvious signs of overheating or internal damage). it has compression, fuel and spark so im not sure what to do now. sometimes whilst attempting to start, it will backfire (and when in a closed garage on your own, scares the sh*t out of you if you arent expecting it) so it is atleast firing, just not constantly and in the right direction.
Lesson learnt, will put the original bore back on tomorrow.
- Steve