2011 RXP X 255 bogging after idling on water

[SteveC808]

Hi thank you for viewing my post. I recently purchased a 2011 seadoo rxp x255 it has 82 hours on it. It runs perfectly fine on the hose on the trailer. I noticed after exiting a no wake zone. It was bogging on wide-open throttle & not accelerating. No misfire, no check engine light. Just falling on its face. If you whack the throttle 5 to 7 times it eventually clears out like a loaded up to stroke. After that it seems to run fine on the water. I asked my local Sea-Doo dealer what they thought could be going on. They didn't seem to have much to say other than a $200 water test & additional diagnostics would be in order.

 

[triplethreat]

How long has it been since the spark plugs were changed? These rotax engines are very sensitive to aging plugs

 

[SteveC808]

I just performed an oil change and spark plug replacement.

 

[Coastiejoe]

You may have an injector that is partially stuck open and putting to much fuel into the cylinder at low speeds. You can pull the rail/injectors and energize it and see what the spray looks like.

 

[russellb]

If you google Mr. Injector you can get info on having injectors cleaned. You pull them, mail them to him, and get them back in just a few days. He does them for a very reasonable price.

 

[SteveC808]

I was considering that possibility. I disconnected the coils & removed the fuel rail. Cranked it over a few times. All 3 injectors are spraying evenly & none were leaking under pressure during the inspection.

 

[Coastiejoe]

I would find a way to test fuel pressure while running on the water. This way you can actually see and confirm a critical part of the system.

Spark plugs almost ALWAYS fix the 4-strokes with the exception of a check engine light...

 

[SteveC808]

I will need to take a look & see how I can tap into it to get a reading. Plugs are clean though.

 

[SteveC808]

So are injectors a common cause of problems on these skis? I've always ran 2 stokes up to this point.

 

[russellb]

That was what my problem was. I had one injector almost completely clogged. It's relatively cheap and can only increase performance.

 

[Coastiejoe]

So are injectors a common cause of problems on these skis? I've always ran 2 stokes up to this point.

They are not a "common" issue but certainly not unusual. Spark plugs are the biggest failure on the 4-tecs.

Bad fuel or dirty fuel contribute to injector issues.

 

[SteveC808]

Well I figured out what was wrong with the ski... I have no idea how was even running at all. Believe it or not it wasn't really running all that bad [emoji51] But there's a major water leak in the inner cooler!