coil / heat sensitive

[tystick]

I have heard that coil can fail under heat yet be fine when cooled.
Is this a rare symptom and/or not really.

 

[Dunaruna]

Re: coil / heat sensitive

Yes it can happen. No, it's not rare. It means that it's time for a new one.

One of the tests I do for a suspected intermittent bad coil is to heat it up with a hair dryer while performing resistance testing.

 

[Scaaty]

Re: coil / heat sensitive

Bad points will heat it up, stalls out 10/15/20 minutes..cools, runs fine again until..(see above)