Of all thermal fogger faults, the one people put up with longest is not 'won't start'. It is 'starts then stalls' — because the machine still works, provided you are willing to hold the throttle open the entire time.

So owners live with it for months or even years, telling themselves it is just how their machine behaves, when in fact it is a clear indication that either fuel delivery or the idle circuit has a problem.

This article follows the owner of a riverside homestay in Chiang Rai who ran his machine in this condition for a whole rainy season, and explains what causes the fault, why it must not be ignored, and what a correct repair involves.