I recently purchased a '99 TTR250 with a no start problem. Turns out its not getting a spark. Today I took to diagnosing the problem. I have been searching the forums for the past couple of days trying to find a solution, but no luck.
Things that tested fine:
Main fuse
Battery
Starter
Starter Relay
Main Switch
Clutch switch
Stator
Ignition Coil
Spark plug & Boot
Kill switch
ON/OFF Steering switch
Handlebar switch
Things that failed:
Diode (S3H-02)
Pickup Coil
The pickup coil doesnt seem to give me a reading so I suspect that failed. Also the diode near the battery failed.
I am also not seeming to get 12v to the CDI(R/B wire). Is that always powered when the bike is on, and hat provides power to that wire?
-- Edited by Hawk427 on Tuesday 31st of October 2023 10:09:57 PM
I've had some change the sprag whilst I was away from home and they routed the stator cable incorrectly. Later somebody changed the front sprockets and pinched a cable. Two weeks later I started getting an intermittent spark, then later nothing. It took a while to realise but it was something silly like that rather than a component.
