OK I'd try the ignition coil first.
I was having weird problems about 5 years ago and seemed to go away with another old coil I had that looked identical off an RGV250.
Just recently I had some more issues. Bike would die occasionally when opening throttle from closed. But if held open would run fine.
Or would it? Was starting to think my mainjet selection needed work.but it's not like it broke down with misfire like I thought a coils should.
Sometimes it was funny to start. Often fine.
Coil measured fine. Problem got better. Then got worse. This time measuring the ignition coil primary it wandered around all over the place.
Ahha! Well the coil was a billion years old.
Yet to properly test with new coil fitted. Should be a generic 0.3ohm primary cdi coil. Look for an RM single wire one or similar. I had to extend the mounting spacers with longer bolts but 55-57mm mounting holes were fine.
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'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
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