96 GTI Cuts out when close to full throttle

[SethG]

Hi,

I have a 96 GTI that I have just bought and taken out 3 time so far this season. The first time it ran good, but the second time the craft began losing power at speeds higher than 35MPH. The third time I took it out it completely cuts out at high throttle and was difficult to get to start in the first place. The motor would crank just fine but it seemed like it was starving for fuel and same at high speed. Just FYI - pulled the plugs and they had a lot of build-up on them so I replaced but didn't seem to help. Also, the carb appeared clean and I didnt see any visible gunk.

I'm good with 2 stroke engines but I'm not totally familiar with these PWC layouts, but I do have the maintenance manaul. Any ideas where I should start looking such as fuel filters? I'm not worried if I have to take it in to get worked on, but I would like to know where to tell the shop to look or have an idea of whats wrong.

Any insight is appreciated.
Thanks,
Seth

 

[LouDoo]

Hi and welcome to the forum.

From what you're saying it sounds like a fuel delivery problem. The first thing to check is the fuel lines, if you still have the grey tempo fuel lines they need to be replaced. Use 1/4" black automotive fuel hose. I use a quality cable tie, about 1/4", the last ties I bought at Graybar Electric, they were Panduit brand.

Here is a link that goes into greater detail.

http://www.seadooforum.com/showthre...el-Delivery-Problems-low-revs-bogging-surging

Lou

 

[ski-d00]

dirty carb filters will do exactly what you are describing.

 

[SethG]

Thanks for the info to start. I will check to see if the grey hoses are still in place when I get home tonight.

As for the carb filters, I had it apart down to the carb but did not get into or remove the carb itself. Where exactly are the carb filters located? I had only taken the top unit off(air filter/flame arrester) and was able to look down into the carbs to see if they were clean.

Also, I will probably have enough time to check the fuel filter tonight. Do you think it is worth the time to do check it at this point? Or should is it most likely the problem lies elsewhere?

Thank you!

 

[LouDoo]

The carb. filters are inside the carbs., you need to remove the carbs. If you have the grey fuel lines, I would wait until I replace the fuel lines to clean the carb. filters. The problem with the grey fuel lines is they are two parts, the inner line glued to the outer. With alchol in modern fuels over time breaks down the glue, and a green goo goes everywhere in the fuel system.

So when you replace the fuel lines you also need to clean the main fuel filter, clean or replace the fuel selector valve, and clean the carb. filters. There's a more detailed description in the link I gave you earlier.

Lou