Problems with motor rpm during flight
in 912 / 914 Technical Questions
10 years ago
Hello pilots
I am looking for a good advice to solve a problem with my Rotax 912 (100 hp - year 2012 – 460 h)
After a normal heat up (to above 50°C) I start from the grass runway without problems.
Soon later I want to make a T&G, and after I touch the ground, I add full power, but seconds later the engine rpm suddenly drop and a shaking / unbalanced running of the engine starts.
With the throttle almost back down to idle (2200 rpm) the engine run smooth again, but as soon as I try to give full power the rpm drop again and the shaking/hard running starts again.
The same day the engine was not so easy to start (properly because of cold weather)
The engine has been running two hours since a three month winter break, no problems or unusual things to notice. For winter preparing the spark plugs has been off, the carb. floats has been off, and the air intake filters has been off for cleaning. Small quantity of fogging oil has been sprayed into main carb. intake for corrosion and humidity prevention.
Could the problem be gasoline supply or electrical, or both in combination.
Any advice to solve the problem are welcome.
I am looking for a good advice to solve a problem with my Rotax 912 (100 hp - year 2012 – 460 h)
After a normal heat up (to above 50°C) I start from the grass runway without problems.
Soon later I want to make a T&G, and after I touch the ground, I add full power, but seconds later the engine rpm suddenly drop and a shaking / unbalanced running of the engine starts.
With the throttle almost back down to idle (2200 rpm) the engine run smooth again, but as soon as I try to give full power the rpm drop again and the shaking/hard running starts again.
The same day the engine was not so easy to start (properly because of cold weather)
The engine has been running two hours since a three month winter break, no problems or unusual things to notice. For winter preparing the spark plugs has been off, the carb. floats has been off, and the air intake filters has been off for cleaning. Small quantity of fogging oil has been sprayed into main carb. intake for corrosion and humidity prevention.
Could the problem be gasoline supply or electrical, or both in combination.
Any advice to solve the problem are welcome.
