Short engine speed decrease

by Fabrice Dubost in 912 / 914 Technical Questions 4 years ago

Hi all,

I have a curious problem with my 912 UL since januar 2021 on each fly : a short engine speed decrease of 1 or 2 seconds the first time (and only the firstt time) I open throttle fully. After these two seconds, the engine run normally for the entire flight. The spark plugs are new, the oil changed, recently synchronized carburetors, no leaks found, no other engine problem. Somebody has an idea where I can search ?

Fabrice

Re: Short engine speed decrease

by Kevin Stewart » 4 years ago

Kevin Stewart

3 409 1.24k

I would drop the carb float bowls and just make sure there is no debris being drawn up into the jet at full throttle. I had similar symptoms a while ago and there was a small piece of rubber/plastic in one of the float bowls.

Report
Re: Short engine speed decrease

by Fabrice Dubost » 3 years ago

Fabrice Dubost

1 1 13

Thank a lot for this suggestion. It was exactly that. After cleaning float bowls, it was OK. I changed the floats because their weight was not correct and the debris origin could be a small part of them..

Thank you said by: RotaxOwner Admin

Report
Re: Short engine speed decrease

by Kevin Stewart » 3 years ago

Kevin Stewart

3 409 1.24k

Thanks for letting us know, I'm glad that you solved your problem. Happy flying!

Report

You do not have permissions to reply to this topic.

Related Topics

Title	Category	Replies
New SB related to various engine issues	912 / 914 Technical Questions	6
Purchase rotax582 engine	Rotax-Owner Community	1
Service Instruction: Installation of a propeller by usage of round-neck nut set for ROTAX® 912, 914, and 912 i (Series) Aircraft Engines	General Tech Discussion	9
Engine speed: half sync	912iS Technical Questions	2
Engine RPM	912 / 914 Technical Questions	9

Short engine speed decrease

Recent Videos

Safety First!

Prize Giveaway!

Log In/Out

Login