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Carb Temp Jumping?


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I just noticed something odd, when performing the run-up, as I gently increase power, the carb temp first:

1) starts around 20c
2) increase throttle which slowly reduced temp to a stable -15c
3) increase throttle slightly more and the needle immediately jumps to +30c
4) slowly reduce throttle and needle drop back down to <-20c

is this normal behavior? (all with carb heat off, full rich)

 

carb1.jpg

carb2.jpg.e9cfef988c0119a0ccb7991f7d79f641.jpg

Edited by dresoccer4
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