Tue Sep 28, 2021 5:43 pm
#1873143
Hi.
I look after a motor glider with a Rotax 912s.
Recently we have had issues when starting from cold.
Once it has started , it runs faultlessly.
I have checked the spark plugs, I've operated them to see if I am getting a good spark.
I am.
I have checked the float height visually. One is slightly higher than the other.
Finding info on setting up carb height is proving difficult.
I suspect the right carb float height is set too high.
After checking the carb bowl and refitting. The engine starts 1st time from cold.
Another point that I have read is that the starter must turn the engine over at least in the range of 250 plus rpm.
Ours is only around 200 rpm.
It is a new battery.
Think I have the problem of low starting rpm. Possible age issue with the starter motor.
One set of floats too high.
Any pointers please.
Many thanks.
I look after a motor glider with a Rotax 912s.
Recently we have had issues when starting from cold.
Once it has started , it runs faultlessly.
I have checked the spark plugs, I've operated them to see if I am getting a good spark.
I am.
I have checked the float height visually. One is slightly higher than the other.
Finding info on setting up carb height is proving difficult.
I suspect the right carb float height is set too high.
After checking the carb bowl and refitting. The engine starts 1st time from cold.
Another point that I have read is that the starter must turn the engine over at least in the range of 250 plus rpm.
Ours is only around 200 rpm.
It is a new battery.
Think I have the problem of low starting rpm. Possible age issue with the starter motor.
One set of floats too high.
Any pointers please.
Many thanks.