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Replaced all 3 plugs. It seems to have helped a little bit, but it still surges in mid range rpm and tops out at 6800 rpm at about mid throttle position. Pushing the throttle to max does not increase the rpm initially. After about a minute at full throttle position, the rpm will slowly creep up...

Thanks for that information, would not have guessed plugs. Will get 3 new ones tomorrow. Will post if it works

Thanks for the inputs. I will check the plugs, but they were new last spring and only have about 25 easy hours on them, but ya never know. My gut feeling is fuel, almost like intercooler leak with small amounts of water going into the intake, but the intercooler was replaced at the same time the...

I have a 2012 Sea-Doo, 180 Challenger! 260hp. I bought the boat used in Oct of 2020 with 95 hours on it. I found out the intercooler was cracked and since I live in Maine, the boat was winterized and into storage. In the spring of 2021, I had the dealer install a new intercooler, new plugs and...

Yes, and I discovered the leaking intercooler. So, replaced the intercooler, changed oil and filter, new plugs and same issue. Idle ok, barely above idle to 3000rpm, engine surges. From about 3200 rpm until top rpm, it’s smooth.

Thanks and your probably correct, except that I just put in new ones. These have about 5 hours on them and it’s been doing this since I put them in.

Thanks for your reply. Am still waiting for my order to come, and will do the same as you did.

Thanks, I will get some and try it under the two hatch covers and see if it helps.

Oh, I forgot to mention, just put in a new intercooler. I bought it, not knowing the intercooler was leaking. Got it in the lake and could not get it on a plane. Intercooler was pouring water into the intake. new intercooler installed by reputable Sea-Doo dealer. It tops out about 55, with no...

Just recently upgraded from a 150 215hp Speedster to a 2012, 180 Challenger 260hp. With kids and grandkids the extra room of the Challenger was really needed. We love the boat as we do a lot of tubing and skiing and now several riders can come in the boat. I have a couple of issues I wonder if...