Honda ATC 90 quits

[The Wohlmanater]

Have a Honda ATC 90 that will lose spark after riding for about 15 minutes. Any thoughts? Thanks!

[tri again]

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Generally, good clean connections, especially grounds
and coil to frame mount etc.

Does it spark again after it cools down?
How long does it have to sit?

For seemingly 'heat' related issues, you can hit individual components with a hairdryer and see if it croaks.
Do this when it's cold and you Know it will run for however many minutes.

Compressed air usually cools them off enough to continue testing.

For instance, fire it up and heat up the coil.

I'd bet it's just dirty connections, unless the carb float hangs up
or the gas cap isn't venting.

Cap vents are my favorite problem because it seems like they run out of gas so we open the cap, check to see that there's gas in it, recap and it runs for a little while again because air has been let into the tank so the gas can flow out.

edit: oops, you said 'spark'

Good luck and please keep us posted.

We all need to know what the problem is.

Oddly enough, the main coil wire can get corroded so you can unscrew the plug cap and nip a tiny bit off the coil wire so it has fresh copper wire to connect to.
Also a little more direct to check for spark right from the wire wothout the plug or cap.