Do these chuff switches just fail and quit altogether when the engine loses chuffing sounds or the chuffing sounds drop out intermittently.
what I guess I want to know is do they just go from working to not working so to speak.
my 4-6-0 ten wheeler I just repaired the ir sensor on. when I had a chance to run it a bit. was dropping chuffs at random sometimes.
I hate to open it back up to replace the chuff switch if it is not necessary. thanks.