grumpytoo

[barry2]

Hi! I'm new to this, so bare with me. I have a 1996 seadoo sportster with what i think is a 717 engine. It starts easily, but only runs for about a minute. It will start again but quits after another minute or more. I replaced the coil ,plugs and wires but same senario. unhooked the heat sensor, didn't work either. I had it put on a scope and they told me it was the coil.ANY SUGGESTIONS grumpytoo

 

[Coastiejoe]

Do you still have Grey Tempo Fuel lines? If not sure, look at the lines. If they are grey or say Tempo on them, then we will give more details.


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[eavega]

To me that sounds fuel related. My experience is that ignition (i.e. spark) either works or does not work. When it works intermittently, it is usually a case of thermal expansion causing something to short or arc out. One minute is not enough time for any significant thermal change with regards to ignition components. I would venture that you have a fuel problem somewhere; fuel pump or restriction. we test this with outboard motors by spraying premixed fuel into the carb throats with a hand spray bottle while the motor is running. If it continues to run where it would normally quit, then you have a fuel restriction somewhere. On outboards it takes a little longer to quit as those carburetors have bowls with floats that meter the fuel. Usually what happens is that the motor will run fine until the fuel in the bowls is exhausted, then they quit. In that case it indicates a clogged filter, or a stuck needle. With the Mikuni carburetors, I don't thing the reservoir is that big, so it will run a very short amount of time if you have a fuel restriction; either a stuck needle, a stuck valve, a clogged filter, or a weak fuel pump.

Rgds
E

 

[Minnetonka4me]

I would agree with the above, but the easiest way to rule out spark is with a spark tester. Put it inline and run it. Pay attention to it when it dies and if spark disappears my guess would be stator.

Welcome to the best Seadoo site on the planet! If I can be of help let me know. I have a good used OEM available if you need it.