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1995 SPi Help!!!!!!!!! (loses power, stalls)

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kneebars

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It's a small engine but it's awesome speed. I am having a few issues, maybe someone may give me some good tips before I give up and take it to the shop. When I got the doo, it was sitting for a year and had about 6 months old gas. When I got it I was thinking of just adding new gas and running it till it was gone. Before I did, I took it in to the shop, had carburetors cleaned, replaced some fuel lines and you know just a quick clean. Last weekend I took it out for a spin, was running awesome... a boat like about a 12" footer was stuck out in the bay and asked me to give them a tug to the boat ramp... i did so. After that incident the ski was losing power. I would give the throttle slowly to all the way, about half way of the throttle it would bump bump and slow down... and repeated to do so until it maintained a stalling speed. It would go go and just slowly lose power. I then put the throttle all the way, and would not go to it's full potential...Any conclusions?!
 

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To start simple I'd say throw new plugs in. Coulda started to foul um loading up the motor towing that other boat
 
Linescreamer: looks like gray; photo provided :agree:

http://i48.tinypic.com/34efdwy.jpg

Jeffspx: I thought the same, prob stressed out the motor in a pull? The following day I changed the spark plugs, and when i took it out to test with a full charged battery it did the same.
 
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Yes those look like Grey fuel lines. Start by replacing those, cleaning carb filters and cleaning the fuel selector.
 
**************************** Update...

I had the chance to go to the automotive store today and obtain clamps and 20 feet of the fuel line. I opened her up and was just marking lines with a marker and replaced one fuel line to see how difficult the work would be. I stopped and will continue Saturday morning, before doing so I wanted to ask you guys for some few tips on the fuel selected and the little filter. I did not want to pry and force the fuel selector out right away because I do not want to break anything and want to know if I am doing it correct. Does it have to unscrew from the outside? Should I use some kind of carburetor spray to clean the selector to remove any clogged up material if necessary, and what may I spray the filter with to settle in for a few hours to clean up? Also, should I spray the inside of the new fuel lines before being put on?
IMAG2345.jpgIMAG2346.jpgIMAG2347.jpgIMAG2348.jpg
 
Remove the knob to the selector, Philips screw in the center of the knob under a cap cover, then once the knob is off, there is a hex holding it against the body of the hull. Once you have the selector out, I believe there is another Philips screw on the back side holding the selector together. Remove that screw and pull the valve that the knob bolts to out of the body of the selector. I would start with soap and a dish soap or some degreasing soap. A harsh solvent may distort the o-ring. After cleaning inspect the o-ring for damage or deformed, make sure the passages all blow thru. I would clean the filter with soap and water too. Make sure the o-ring for the filter is clean, not damaged and goes back smoothly without pinching. You can clean the fuel lines if youd like, but I don't think you need too. Like you mentioned, do one line at a time, that way you don't forget where each hose goes
 
I did what you said Jeff! I am about 80% done, the fuel selector was clogged and the grey lines were nasty as well!!! They were a pain to take off. I did not mark all the lines, because I thought my memory was superb, but was wrong!!! Which lines belong to the fuel filter and the line to the carburetor that extends to the front? If someone may provide me a photo of the lines from the fuel filter behind the gas tank (from a similar model), would gladly appreciate it!!! Thanks!IMAG2355.jpgIMAG2357.jpgIMAG2359.jpg
 
You should really rebuild the carbs. There is a good chance they are all gummed up. You can download a manual by googling your model and follow the pictures.
 
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