piston problem or what???? 97 sltx 1050

[qsteeler10]

I have had a problem with one of the cylinders not fireing or thats what I think. I put new plugs in and ran the pwc. In number 3 looking down throught the spark plug hole the piston top looks silver. In number 1 & 2 the piston head has a darker color to it. The plugs resemble the same thing. What could cause this to happen. It seems that number 3 is not working proper. I have very sluggish take off an top speed of 32 mph. Just seems to be running on 2 cylinders. could there be water in that cylinder and how easy is it to check. Please help.

Thanks

[la90043]

Re: piston problem or what???? 97 sltx 1050

check to see if you have any spark getting to your spark plug. seems to me you dont have no spark there and you are running on 2 cylinders

[qsteeler10]

Re: piston problem or what???? 97 sltx 1050

i checked the plug and it s getting spark. it looked as the other cylinders are showning signs of carbon (the dark color) but not #3

[99gp1200]

Re: piston problem or what???? 97 sltx 1050

You have a fuel supply problem on #3

[qsteeler10]

Re: piston problem or what???? 97 sltx 1050

I think you may be right on the fuel problem, but there might be more to the problem. I pulled the cover off of #3 and the piston seems to have some chips n the top of it. the walls of the chamber are dry and seem to be a little rusted. there s no visual scaring but I dont know if it s not getting oil or gas or what. How can I fix the gas or oil problem and is my chamber ruined. I cant tell if the piston has any scaring because i cant get it out.

[99gp1200]

Re: piston problem or what???? 97 sltx 1050

Its probably detonation from lack of fuel.
Post some pictures and the experts (not me) can tell you what they think.

Time for a carb rebuild if your not getting fuel. Also, make sure the oil line is secure.

[javiert99]

Re: piston problem or what???? 97 sltx 1050

Pictures please.. that would help :) There should be no rust on your cylinder walls, nor should there be any metal chips anywhere in the combustion chamber.

[qsteeler10]

Re: piston problem or what???? 97 sltx 1050

ok guys here are some photos

[javiert99]

Re: piston problem or what???? 97 sltx 1050

Possible water ingestion? It's rusty as hell..

[qsteeler10]

Re: piston problem or what???? 97 sltx 1050

I did have the boat almost sink. but water did not reach carbs. what to do now????

[John Kubiak]

Re: piston problem or what???? 97 sltx 1050

Order an SBT shortblock, and related components.....make life simple, enjoy your ski.

[surveyguy]

Re: piston problem or what???? 97 sltx 1050

if you did not injest water into the engine, you're fine, just rebuilt the back carb for starters.