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912UL poor idle below 2000 rpm

by in 912 / 914 Technical Questions 13 years ago

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Re: 912UL poor idle below 2000 rpm

by Roger Lee » 13 years ago

Roger Lee

125 5.12k 4.53k

Hi Malcolm,

Dirt, float flakes and hose flaking are common causes for a sudden carb issue at idle since the holes in the jet and passages are so small any little piece can cause an issue. When I have an acute carb issue this is one of the things that gets checked. It's another reason to check float bowls every 200 hrs.and be able to do a carb sync because many times are carb sync will point to the affected carb. Hose flaking on the interior past the fuel filter is another good reason to change out all hose every 5 years. If a plane has sat for a long time and then runs rough then its time to pull the carbs and clean out the jets where the fuel dried and has started to plug up the jets.

Glad it was something simple and easy. Now go have fun with the good weather.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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