Water temp sender verification

[BryceKat 125]

Hey Guys,

Kitplanes 2011 issue had an article about a guy who chased what he thought was a cooling problem on a Rotax 914, but he found it was a water temp sender producing bad info. My 582's sender/instrument might be guilty also. My thought for testing is as follows:

-remove temp sender from engine and clean/inspect

-Put temp sender in bowl of Hot water(plenty of that around-and I'm usually in it! )

-Measure water temp w/ wife's cooking thermometer (this explains the previous statement!)

-Turn on master and see what the instrument is reading.

Does this make sense? Any thoughts, well most , would be appreciated! Bryce

[horsepower 24]

Hey Guys,

Kitplanes 2011 issue had an article about a guy who chased what he thought was a cooling problem on a Rotax 914, but he found it was a water temp sender producing bad info. My 582's sender/instrument might be guilty also. My thought for testing is as follows:

-remove temp sender from engine and clean/inspect

-Put temp sender in bowl of Hot water(plenty of that around-and I'm usually in it! )

-Measure water temp w/ wife's cooking thermometer (this explains the previous statement!)

-Turn on master and see what the instrument is reading.

Does this make sense? Any thoughts, well most , would be appreciated! Bryce

Should work Bryce,If its an electric gauge you will need to ground the sender,Im pretty sure,if mechanical guage then just drop her in. Randy

[C5Engineer 1170]

I just replaced and rewired my water temp gauge after it was bouncing all around and I was also thinking about this. Let us know if it works out.

[SuberAvid 617]

Checking it is a good thing to do. You can compare it to the cooking thermometer but plain water boils at 212 degrees F at sea level and the boiling point reduces slightly as you go up in elevation (I don't remember the degrees per 1000 ft elevation offhand but it is pretty small) This gives you a check point at the boiling point; your guage should be reading right at 212 if you are at sea level or a few degrees lower if you are in Denver. I checked my electric sender and electronic guage that way when I set it up just to be sure.