Page 1 of 1

New Nepallo 20 ft with 90hp Suzuki-Prop ventilation problem

Posted: Mon May 22, 2023 5:49 pm
by Jlewis50
My new Nepallo 20 with a 90hp Suzuki is having a prop ventilation issue. With a neutral trim the prop vents at full throttle. With a full load it vents at multiple throttle settings.
The dealer has changed the 3x13.5x15 prop to a 3x14in x 13 pitch.
It has improved my problem but it too vents at full power.

Any easy fix for this as the problem still exists and dealer isn’t exactly on top My problems.

Re: New Nepallo 20 ft with 90hp Suzuki-Prop ventilation problem

Posted: Tue May 23, 2023 3:48 am
by jlh3rd
without getting into my details with personal experience ( although I can). More than likely you need to lower the motor. Need to see a picture of the motor at level and the cavitation plate in relation to the motor pod and toons...

pontoons can be notorious for ventilation issues....

Re: New Nepallo 20 ft with 90hp Suzuki-Prop ventilation problem

Posted: Tue May 30, 2023 2:55 pm
by Horsepen
Trim is pretty useless on a pontoon. Usually. Yours may be an exception, but on mine, anything more than a little bump causes ventilation.

Re: New Nepallo 20 ft with 90hp Suzuki-Prop ventilation problem

Posted: Fri Jun 02, 2023 12:00 pm
by BobL
Jlewis50 wrote:
Mon May 22, 2023 5:49 pm
With a full load it vents at multiple throttle settings.
When you say "full load", I assume full of people/gear front and back. Since it is venting more often with a full load, my bet is also (as jlh3rd said) that the motor is mounted too high. Drop it down a hole and try it out.