Hi all,
I got the atv with a house I bought. So don't know the history. But I guess it is around 15 years old linhai 300

When temperature is above 15 degrees Celsius (59 farhrenheit) there is no spark. It runs perfectly below this temperature. And it will shut off even if running, if the temperature is increasing, I cannot start all day. But when then sun sets and temperature drops it starts like nothing happened.

Please advise where you suggest I start.
Thanks

 

Note someone else on here yesterday asking about a no spark Linhai. The wiring diagram they put up shows an old car style ignitor ignition set up, not CDI. As simple as you can get, so do 1980s car style ignition circuit tests. pickup coil, ignition coil or ignitor could all be suspect regarding temperature related faults. Even switches can throw faults varying with temperature.

 

Thanks for getting back. I do not not know the 1980s ignition test. Will check up on that.

​​​​​​It got me a bit worried the last part about switches. The override button does not work at all. If the previous owner did something.

Again as a new one in this, it is very much appreciated to get pointed in a direction.

 

If it is ignitor ignition, the coil will be 12v and get a pos feed from ignition switch through the kill switch, as will the ignitor. Fairly easy to check, live with ignition on, dead with ignition off. Check earth on ignitor is earthed, check pickup coil resistance and note if it varies a lot between when there is a spark and when there isn't. Also check voltage produced by it (AC), when being spun over, often quite small, it will again vary between when fault is on or off, if this is the cause of the problem.