2009 Kawasaki Ultra Lx Problems

Thread: Kawasaki Ultra LX electronic problems

09-10-2008,05:51 AM #1

Kawasaki Ultra LX electronic problems

Please help.
I own a Kawasaki Ultra LX 2008 model. It has approximately 15 hours on the clock. It has been running fine till now. The motor started running uneven not idling right and I could feel it was not able to reach top speed. It came right for approximately 15 min so I thought it might have bean water in the fuel. It starter again running uneven during idling and then it blew the main fuse. Inserted a new fuse inserted the immobilizer key and the digital display came on ready to be started , when I pressed the start button you could hear the starter motor turning for a few seconds and then the fuse blew again. Inserted another fuse with the same result.

Can some one help me as I am living on a Island and it is difficult to get the Jet ski to a dealer on the main land to check it out. Thank you.

09-10-2008,07:40 PM #2

Giz, look at any wiring routed near exhaust in starter area. Also under handlebar pad and where it routes down to inside hull. Whatever u do DO NOT increase fuse size.
09-12-2008,04:55 PM #3

A few things to check:
> Follow the speedo sensor wire from the back of the unit toward the front, and see if there is any kind of wiring problem such as shorting/melting/pinching to the ground.
> Sometime bad bendix gear (too much load) blows the main fuse. Has the starter motor ever slipped on you?
> Ignigition key slot (where you insert your key into) might have gotten water damaged - shorted inside.
You have multiple symptoms that may not be relating to each other and they could represent more than one problem. I'm curious to find out.

Last edited by meangreenman; 09-12-2008 at 05:14 PM.
09-14-2008,02:31 AM #4

I removed all the connection plugs from the harness and sprayed it with contact cleaner to eliminate possible moisture ingress. I can start the ski now without blowing the main fuse . Will be putting the ski in the water this weekend hope all goes well. Still don't understand why the motor was running uneven though. Will check speedo sensor cable.
09-16-2008,05:09 PM #5

Originally Posted by Gizmo

Still don't understand why the motor was running uneven though.

Idling is the most sensitive/difficult rpm range where the EFI system has to calibrate Fuel/Air ratio because of smaller amount needed of each - also that's where you would find the uneven running condition most likely.
I would check/clean/lube the ISC (idle speed control) stepper motor area next to the throttle body assy.