Keep this in mind ....

[danhagan]

Have been chasing a problem with the oil temperature reaching near red-line since July (basically haven't been able to fly except test flights). Original mechanic ran through usual ideas (change oil sensor, check vernotherm, replace oil temp gauge, eval engine for major problem and blow out the oil cooler).

Went to a new mechanic that started re-checking. "New" oil sensor discovered to not match Mitchell oil gauge (original and new are identical). Problem solved.

 

[weirdjim]

Have been chasing a problem with the oil temperature reaching near red-line since July (basically haven't been able to fly except test flights). Original mechanic ran through usual ideas (change oil sensor, check vernotherm, replace oil temp gauge, eval engine for major problem and blow out the oil cooler).

Went to a new mechanic that started re-checking. "New" oil sensor discovered to not match Mitchell oil gauge (original and new are identical). Problem solved.

First test is to dunk sensor in boiling water and see if the needle is anywhere near 212°F. Saves a lot of what we call shotgunning the problem (throwing lots of parts at the problem hoping one of them hits the target.)

 

[danhagan]

First test is to dunk sensor in boiling water and see if the needle is anywhere near 212°F. Saves a lot of what we call shotgunning the problem (throwing lots of parts at the problem hoping one of them hits the target.)

Not sure why the first facility was having so much trouble. They insisted they did that for both the sensor and vernatherm to confirm operation.

Second mechanic/facility was "thrown" off course temporarily trusting the new installed sensor until other tests were performed.