03 GTX DI Full Throttle, 3600 RPM, No Codes from Computer

[kurtza]

Was on vacation using my GTX DI, and it was running great - maxing at around 6800 RPMs. Put in new fuel, and fresh oil, and now it won't run above 3600 RPMs. Bled the oil out, put fresh oil in (again), and still nothing.

Brought it into the shop, and they said there are no codes coming from the computer. They do, however, think it's something with how fuel is getting to the engine, possibly a fuel injector problem. I'd think the computer would spit out a code for that, would it not?

Any other suggestions as to what might be the problem?

 

[vicky]

i got simular problems after reading your post w/fuel im convinced fuel filters are gloged up.I own trucking Co i've seen fuel filers so glogged that trucks won't run at all.

 

[Dennis]

Fuel Injectors

The computer would NOT necessarily know if the ski had a fuel injector or air injector problem. I would put a volt meter on the battery, start the ski and see if the charging system is working correctly. If the voltage reading at the battery (when running) is less than 13 volts or more than 14.5 volts the ski will go into "limp mode" and only rev to about 3500 RPM. If the voltage at the battery isn't correct then replace the rectifier. The other thing that would cause this is if your using the "learning key" and not the standard key.
Good Luck, DAWG

 

[kurtza]

Thanks for the info. Dennis, the battery is brand new, should I still hook up the voltometer?

 

[kurtza]

forgot to mention

When I fired up the pwc, it took a few attempts for it to finally start up. It seems that it would only start when I hit the throttle and the start button simultaneously. Once it was running, it would sometimes die out when I fully depressed the throttle. On other occasions the engine would stop if I idled.

Any advice would be appreciated!

 

[kustomkarl]

It sounds like its having fuel problems. You will need the dealer to use the B.U.D.S,( Bombardier Utility Diagnosis System) while checking the fuel system for proper pressure, or the problem could also be the compressor that helps optimize the fuel before it enters the engine.
Keep us posted if the dealer finds the problem.

Karl

 

[kurtza]

Kustomkarl, the dealer is telling me they'll have to poke around and will use trial and error until they find what's causing the problem. I believe they used the buds system, but I did not ask about the compression or fuel levels. Moreover, they said that when they hooked it up to the computer, it spit out absolutely nothing. Wouldn't the BUDS software alert the mechanic that the compressor is faulty? Its frustrating as hell because the pwc has been there for a week, and they have no idea what the problem even is, let alone how to fix it.

 

[kustomkarl]

The dealer needs to use the BUDS to help in assessing the problem of the fuel problem. They would have to test the pressure of the different components to verify that the fuel system is working properly. The BUDS will not indicate that a problem in the fuel rail or pressure from the compressor is correct. They have to be diagnosed for the problem. If it were a sensor or any other component the buds would pick it up. It's kinda process of elimination...it has to be what is not known to be bad. There are 3 different tests to check the fuel pressure in the systems. They all involve the buds and pressure guage adapters with special fittings.
I hope this sheds some light on the problem for you.
Keep us posted.

Karl