20121 195S engine pulsing at and above 34mph

[Skozzy1]

So on the lake today and the boat was running great we stopped middle of the lake for the second time. Once we left hit it up to speed to “go fast” for the kids and the engine started pulsing when we hit 34mph if we dropped back to 30mph it ran fine. Any ideas?

 

[steveinmd]

So on the lake today and the boat was running great we stopped middle of the lake for the second time. Once we left hit it up to speed to “go fast” for the kids and the engine started pulsing when we hit 34mph if we dropped back to 30mph it ran fine. Any ideas?

Check your air filter box. The snorkel coming off the box specifically. There is insulation in the area that will come unglued, partially blocking the snorkel. The pulsing is the insulation getting sucked in, restricting air flow and then releasing.

 

[Skozzy1]

Check your air filter box. The snorkel coming off the box specifically. There is insulation in the area that will come unglued, partially blocking the snorkel. The pulsing is the insulation getting sucked in, restricting air flow and then releasing.

thanks I will check that out. I figure it has to be something simple as it is running fine under those speeds

 

[Skozzy1]

thanks I will check that out. I figure it has to be something simple as it is running fine under those speeds

I am sure that is what it was this piece of foam

 

[Skozzy1]

That was it, used medical tape to hold it in place until we return. Ram amazing again today.