Kawasaki 1100 stx di bad plugs

[bxtr97]

I have a 2000 Kawasaki 1100 stx di, last weekend it was running fine, then I went through a no wake zone and then it started running very poorly like the spark plugs went bad. I checked the plugs and they were black so I replaced them, I took it back out for only a couple minutes to test it and it was still running bad, when I check the new plugs again, 2 of them were black.

Anyone have any thoughts on what might be wrong?

 

[MikDee]

Re: Kawasaki 1100 stx di bad plugs

Sounds like something is causing it to run too rich.

 

[Rob454]

Re: Kawasaki 1100 stx di bad plugs

I I checked the plugs and they were black so I replaced them, I took it back out for only a couple minutes to test it and it was still running bad, when I check the new plugs again, 2 of them were black.

Anyone have any thoughts on what might be wrong?

Sounds to me like youre not getting spark on one of the plugs since you had 3 that were black and then when you changed them you only had two that were black. Take off the spark plug cap and trim off a little bit of the plug wire then reattach the cap. the cap shoudl screw into the wire end
Rob

 

[mickeybee]

Re: Kawasaki 1100 stx di bad plugs

I have the same machine. Can't offer you suggestions, but if you find that you need a new engine or want to sell your boat, let me know. I have a brand new engine installed in mine, then the hull failed and is not repairable. I am willing to sell my engine or else buy your hull. I am in the MD area.

Mike

 

[Jeff Walkowiak]

Re: Kawasaki 1100 stx di bad plugs

have you checked the exhaust system for leaks and on kawasaki the plug wires are notorious for going bad so try trimming off a little where the plug boots are,.