[Blaes]

I'm a newbie to this forum and checked some posts after my son swamped my Jet Ski (97 1100 ZXI). Got all the water out and the engine running, but it will NOT idle. It shuts down under a rough idle, or any less than 2500 RPM.

Noticed that only the front cylinder gets very hot after running for 15 minutes with cooling hooked to garden hose. I have two theories:

1. Cooling system blocked to front cylinder
2. Extreme friction in front cylinder causing overheating, due to ???, I'm afraid to ask and probably expect an engine re-build or worse.

Any suggestions from an experienced motor head?

 

[lightngsvt]

Not sure I have an answer but I have a 2000 ZXi 1100 that just ate the middle cylinder. I have heard talk about the oil injectors going bad on these skis, which may be my issue. In your case I wonder if it could be a carb issue or plugged water passage? If its running lean, its going to run hot. Hope you dont have to do a rebuild!

 

[tymeshare]

What are you using to judge this temp?..a non-contact(infa-red) thermometer?..

What does the spark plug look like?..

You can see a lot of engine problems coming by looking at the plugs..

Black n sooty can mean a loss of compression, over-rich fuel, failing ign., etc.

White or tan means good burn..

Black n wet means ign. failure, injector failure, etc..

Grey/ flaky can mean improper heat range/cyl. overheat..

Take a look at them and lets see what the engine has to say about all this..

 

[speedfreak99]

I just pulled my 97 with burnt piston and found a block in the water port- due to when repaired prior using too much gasket sealer- not sure if thats why it got super hot but it could have been- either that or had a clog in my #1 oil injector-