Tick
Registered User
Anchorage
OK, so let me start out by saying I have spent nearly $3k in various repairs on my bird in the last 30 days so I'm pretty financially tapped out. I'm trying to self-diagnose before I help my A&P make his next mortgage payment.
I've got a 1953 PA-18A with an O-320-A "narrow deck" 150hp. The Alcor CHT (46151) has just mysteriously stopped working altogether shortly after having a new digital Electronic Instruments digital tach installed. The needle just sits full left like the engine is cold all the time when it should be reading well into the 300 degree F range in my experience.
I tried to trouble shoot by looking for any loose connections from the back of the CHT guage all the way to the probe and everything was in great condition and no connections were even remotely loose. I took a heat gun to the CHT probe set to 500 deg F and nothing happened.
I'm handy but not particularly skilled in electrical work. Any help trying to diagnose the likely culprit would be greatly appreciated. I've attached some pictures of the probe as well.
I've got a 1953 PA-18A with an O-320-A "narrow deck" 150hp. The Alcor CHT (46151) has just mysteriously stopped working altogether shortly after having a new digital Electronic Instruments digital tach installed. The needle just sits full left like the engine is cold all the time when it should be reading well into the 300 degree F range in my experience.
I tried to trouble shoot by looking for any loose connections from the back of the CHT guage all the way to the probe and everything was in great condition and no connections were even remotely loose. I took a heat gun to the CHT probe set to 500 deg F and nothing happened.
I'm handy but not particularly skilled in electrical work. Any help trying to diagnose the likely culprit would be greatly appreciated. I've attached some pictures of the probe as well.