I have a 02 Blaster (stock) and I've had no problems since I bought it 9 days ago, but after washing it 3 days ago, and letting it sit since I had work, It's been running weird. I took it for a ride, and when i pulled the clutch in to put it into neutral and it stalled, after it stalled, i touched the engine and it was hot to the touch, yet it still took 5 good kicks to get it started, and the idling is very weak unless i rev the engine, and when i add barely any throttle, it shuts down. I took the seat, and the airbox cover off thinking the filter was wet, but it's dry, but i heard like a...gurgling/sucking sound from the airbox when i took the filter off. It will idle fine for about 3 minutes, then just stall.Also I noticed its smoking A LOT more than usual, so I shook the gas up in the tank, and it still smokes. (My blaster is self mixing and I left the gas on while it was sitting) But I started it up yesterday, and it was running fine. Throttle response was crisp and clean.

 

i'm assuming electrical, it could be the nuetral sensor wire is loose/corroded and maybe washing it knocked it around to the point its barely touching right now, i'd suggest getting a repair manual to find out what wire it is(and this book will help with future problems as well). but it seems electrical to me.

 

its running fine today.

 

Probably wet wiring connections. Check battery cables, too. Could be loose.