Rotax burping sound

H. Paul Shuch is a Light Sport Repairman with Maintenance ratings for airplanes, gliders, weight shift control, and powered parachutes, as well as an independent Rotax Maintenance Technician at the Heavy Maintenance level. He holds a PhD in Air Transportation Engineering from the University of California, and serves as Director of Maintenance for AvSport of Lock Haven.

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3Dreaming
Posts: 2639
Joined: Sun Jan 10, 2010 6:13 pm
Location: noble, IL USA

Re: Rotax burping sound

Postby 3Dreaming » Tue Sep 17, 2019 5:58 pm

Nomore767 wrote:I always remove the oil tank cap before burping less air pressure to the tank and the gurgling sound is louder.
Just my technique.


I can't imagine that there is much pressure restriction in the 5/16" breather line, especially with the volume of air that is being pumped into the tank.

Nomore767
Posts: 917
Joined: Fri Jan 18, 2013 8:30 pm

Re: Rotax burping sound

Postby Nomore767 » Wed Sep 18, 2019 8:44 am

3Dreaming wrote:
Nomore767 wrote:I always remove the oil tank cap before burping less air pressure to the tank and the gurgling sound is louder.
Just my technique.


I can't imagine that there is much pressure restriction in the 5/16" breather line, especially with the volume of air that is being pumped into the tank.


Maybe not but since I'm taking the oil cap off anyway in order to check the oil level its really moot...plus I can hear the gurgle louder.


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