2008 GTI fast idle - 4200

[dshelley]

Just put my seadoo GTI SE 130 in the water and had 2 problems.
1) seal tube was leaking - fixed that.
2) it's idling at 4200rpm when the engine is warm - 21 mph. Idle is about 1700 with the engine cold. Anyone know what would cause this?
thanks

 

[dshelley]

After reading about this problem online I figure it's the idle bypass valve. So I took it apart, sprayed it with carb cleaner, put fuel cleaner in the gas, and went for a full throttle ride.
Now the idle speed is down to about 3100rpm. At that speed I can use the reverse to slow down enough to dock it. I guess I need to replace the idle bypass valve.

 

[dshelley]

So, no replies, thats disappointing.
Anyway, just an update, the idle bypass valve didn't make any difference, so I returned it. But I fixed the problem by spraying penetrating oil in the throttle cable. I guess that was sticking and holding the throttle open a bit. A mechanic in Nobel suggested that.

 

[enut]

Make sure to use fogging oil or xps lube to lubricate the throttle shaft inside the throttle body. There is a fitting on it for this purpose. Some engines have a yellow cap fitted to the plastic cover to allow you to lube it easier.

 

[Bmumper]

So, no replies, thats disappointing.
Anyway, just an update, the idle bypass valve didn't make any difference, so I returned it. But I fixed the problem by spraying penetrating oil in the throttle cable. I guess that was sticking and holding the throttle open a bit. A mechanic in Nobel suggested that.

I was going to suggest throttle cable as I had one in 05 gtx that had high idle and replaced the cable to fix