1994 GTX won't run

[07rxtBrock]

After purging the oil into the oil injector and the through the lines of the injector into the intake it ran great. But the boat was siting on an angle and the fuel pump stopped reaching the gas and the motor quit. Then I lowered the back end of the boat and but more gas in and when when I tried to start it won't run. It spits fire out of the CARBS. So I pulled the filters out f the CARBS and cleaned them along with the bowl of the fuel filter. Just to be sure I put in an inline fuel filter to make sure the gas is clean before the CARBS. And I changed the oil filter. And now nothing but fire out of the CARBS. IT has compression, spark, fuel, and oil. What could it be?

Any thoughts?

07rxtBrock

 

[07rxtBrock]

So I pulled out the motor out of the ski, and I found a grey soup that smells like gas in the crank case. Would that have anything to do with it not wanting to start?

 

[Coastiejoe]

So I pulled out the motor out of the ski, and I found a grey soup that smells like gas in the city and case. Would that have anything to do with it not wanting to start?

Your auto-correct spelled the word CITY... What were you trying to type?

 

[07rxtBrock]

Your auto-correct spelled the word CITY... What were you trying to type?

Crank case.

Sorry

 

[RodInEscondido]

Gray generally indicates water/oil mixture.

Contaminated fuel?

Gunked up fuel system?

Do not know where to start ... compression test (if gunk in crankcase, remove plugs, cover plug holes with rag, crank it to see if you get more crap out before test) ... go from there.

 

[07rxtBrock]

Gray generally indicates water/oil mixture.

Contaminated fuel?

Gunked up fuel system?

Do not know where to start ... compression test (if gunk in crankcase, remove plugs, cover plug holes with rag, crank it to see if you get more crap out before test) ... go from there.

Installed and I line fuel filter cause I think there was gunk in the tank. Cleaned the carbs out and the bowl filter in the fuel pump. installed new oil filter. 145 compression at full throttle. Took the motor out of the ski and drained the gunk. Put gas into the crank case and rotated the motor to clean it out. Drained it again. Realigned the rotary valve. Have yet to put it back into the ski. Will post when I find out if it runs or not.

 

[07rxtBrock]

So after cleaning out the gunk from the crank case I put the motor into the ski and still same problem. flames shooting out of the CARBS. At a couple of points it sounded like it would run but it just wasn't there. Possibly ignition timing? Or maybe its something else?

Compression: 145 on both cylinders at full throttle
I have inline fuel filters cleaning he gas and the oil.

Any thoughts?

Thanks

07rxtBrock

 

[FaceDeAce]

Have you drained and cleaned the fuel tank and put fresh NEW FUEL in?

How deep did you go into the carbs? Did you completely disassemble, thoroughly clean, check and blow through all jets/ports. Pristine and spotless? Needle valve and seat in good condition?

Next could be getting into ignition timing check/adjust.

 

[07rxtBrock]

Have you drained and cleaned the fuel tank and put fresh NEW FUEL in?

How deep did you go into the carbs? Did you completely disassemble, thoroughly clean, check and blow through all jets/ports. Pristine and spotless? Needle valve and seat in good condition?

Next could be getting into ignition timing check/adjust.

How hard is is t to adjust the ignition timing while the motor is in the ski?

Also I pumped out whatever was in the tank and put in fresh gas. And the carbs were disassembled far enough to clean out the filters and the jets. Never made it the needle valve.

Also what if I'm having a problem with the pulse line? Maybe it's not creating a vacuum?

07rxtBrock

 

[07rxtBrock]

Where can I find a needle and seat kit?

 

[Coastiejoe]

Where can I find a needle and seat kit?

[MENTION=41828]Minnetonka4me[/MENTION] stocks them I believe.

 

[07rxtBrock]

[MENTION=41828]Minnetonka4me[/MENTION] stocks them I believe.

I live in Canada. Shipped here?

 

[FaceDeAce]

http://store.sea-doo.com/parts
For parts. I live in Canada also. I have found that the brp store is easy, and often cheaper, than any of the other big online pwc stores. Unless you are looking for aftermarket performance parts of course. The brp store pulls parts from dealers and storages across Canada. You may receive more than one package. As example on my last order, one part came out of Quebec and another from Winnepeg.

I also read elsewhere the backfiring could also be caused by too much rotary valve clearance. You may want to research that as well.

Ps. The pulse line runs the diaphragm fuel pump inside the carb. If a pulse issue, you will find whatever it is inside the carb while inspecting the fuel pump ports and components.

 

[07rxtBrock]

http://store.sea-doo.com/parts
For parts. I live in Canada also. I have found that the brp store is easy, and often cheaper, than any of the other big online pwc stores. Unless you are looking for aftermarket performance parts of course. The brp store pulls parts from dealers and storages across Canada. You may receive more than one package. As example on my last order, one part came out of Quebec and another from Winnepeg.

I also read elsewhere the backfiring could also be caused by too much rotary valve clearance. You may want to research that as well.

Ps. The pulse line runs the diaphragm fuel pump inside the carb. If a pulse issue, you will find whatever it is inside the carb while inspecting the fuel pump ports and components.

Awesome thanks so much.

I dont think it's a pulse problem but I was just throwing the idea out there to see what someone thought. Also as far as rotary valve clearance I am a machinist and I have to clean up the face of the intake that meets the the rotary valve. In doing so I was able to find out how tight I am able to make it. I made it to stock clearances so I don't think that's an issue but I will look into it.
I had to machine and fix a couple of other parts. It's cheaper for me to fix something on my lunch then have to scout out parts and have to buy them. I attached picture of everything I had to machine.

All of these I will look into and then write back.

Thanks.

07rxtBrock

 

[07rxtBrock]

Also the website you left me doesn't have anything for skis older then 1996.

 

[07rxtBrock]

Left the ski at my dad's place for the weekend he's got a timing light so I asked him if he'd be able to take a look at it for me since I was going away. He was able to find that the timing was not out it was that the battery was not producing enough power and that the flywheel wasn't properly tighten down by the former owner. He made a new shear pin and reset the timing put the motor back in the boat buttoned everything up and now it runs like a dream. If I hadn't looked into the timing problem I would have definitely caused some serious damage. Got a new battery for the ski going to take it out on the water and see what happens.

Any tips on how to set the steering alignment easy?

Thanks

07rxtBrock

 

[FaceDeAce]

Awesome! Glad to hear you found and fixed up the problem.

The steering adjust is fairly simple to adjust (turn buckles).


Have fun out there!.