95 SPI issue.

[Rinkrat1963]

Hi All, I picked up a 95 SPI. All original. I took it out to the lake and it ran great for about 15 minutes. Plenty of power, took right off. Then, it started to act up. When I gave it full throttle, it took right off then bogged down to almost idle speed. This went on for a while, as I tried to get back to the dock. Then it would only run at about 1/8 throttle all the way back to the dock. I don't think the fuel system has been messed with. It has all the gray lines. Also, it starts right up and idles fine. Any ideas?
Thanks

 

[nibroc]

replace those grey lines

 

[mikidymac]

Gray fuel lines, carb rebuild with only genuine Mikuni parts and new needles and seats, new fuel selector and fuel strainer o-ring. Replace the little 3/32” oil injection lines from the oil pump to the intake manifold, replace the inline oil filter and verify correct API-TC oil is being used.

 

[Rinkrat1963]

Gray fuel lines, carb rebuild with only genuine Mikuni parts and new needles and seats, new fuel selector and fuel strainer o-ring. Replace the little 3/32” oil injection lines from the oil pump to the intake manifold, replace the inline oil filter and verify correct API-TC oil is being used.

Thanks for the reply. I just replaced the fuel lines and the selector and the strainer. I will order the Mikuni kit and rebuild the carb. Update will follow.
Much appreciation!

 

[Rinkrat1963]

replace those grey lines

Thanks for the reply! I just changed the selector and the filter and the gray lines. I ordered the Mikuni carb rebuild kit.

 

[Rinkrat1963]

Gray fuel lines, carb rebuild with only genuine Mikuni parts and new needles and seats, new fuel selector and fuel strainer o-ring. Replace the little 3/32” oil injection lines from the oil pump to the intake manifold, replace the inline oil filter and verify correct API-TC oil is being used.

I replaced all the fuel lines and the filter with o-ring. I also put a new fuel selector in it. I got the carb rebuilt with the Mikuni kit from OSD. The pop off pressure was 22lbs. That is the low end of the scale according to the shop manual. I took it out and it ran great for around 20 minutes. I shut it down for a minute and I couldn't get it to start again. Of course, I killed the brand new battery I bought. I got a tow back to the dock and got the ski home. I charged the battery and tried to start it again in my garage. It started, but with a lot of smoke. Gonna check the inside of carb again. Maybe I missed some dirt in there. Gonna try to raise the pop off pressure too.

 

[POPPS]

Load test the battery,,,check compression.