Right then, I have no idea how this is going to sound but here goes
I managed to start the KX500 up again today (With a spray of easystart ;o)
Got it running, smoked like a good'n, I mean serious smoke!
Now this is where it gets funny
When running sounded like this: xxxxxx0xxxxxx0xxxxxx0xxxxxx0xxxxxx0
x= sound like nornal engine noise.
0= Detonation very noticable and very regular I guess the frequency is maybe 3 or 4 a second.
I figured the engine was flooded from all the kicking so I held the throttle wide open for maybe 20 seconds.
I noticed there was no increase in RPM at all, only the deep throaty sound of a fully open carb.
Took the plug out and the end was covered in wet oil, this I cleaned off with Wynns carb cleaner. I also stripped the carb and cleaned it out with the same and replaced it.
All appeares well with the carb, air screw is 1.5 turns out from fully in. Choke appears to be working.
a) All I've done since last I started it up at the weekend (when it sounded sweet) was lube the throttle cable. I thought WD40 had perhaps run down the cable into the carb but no.
b) I replaced the woodruff key (the coil plate never came off so the timing is as it was)
c) Installed a kill switch. This is a genuine Kawasaki part, when I previously started it there was no kill switch. I don't know if this has somehow increased resistance, weakened or inhibited spark? I'll disconnect it tomorrow and try agian but if any of you 2 stroke tuners can offer advice re mixtures etc it'll be greatly appreciated.