FX-1 Will Not run

[thirdminor]

Help, my fx1 701 stock.. Just put new mid shaft in after breakage. Now motor fires off the shuts down. Full throtle at start raps out then shuts down. Will not idle. But will contunie to fire off the stop???? Any help??? thank you

 

[lilevo]

What is different from when it was running until now? What broke?.. timing key possibly sheared

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[thirdminor]

Mid Shaft sheared but ran fine after broke???

 

[BruceSki]

Sounds like you have the fuel lines hooked up wrong. Priming it to start then it runs away on ya?

 

[thirdminor]

No it doesnt run away just fires then done.. If i poor fuel down does same thing. Ive tryed so long got black smux dripping out of exhuast.. No matter how much fuel fires the same???

 

[b-rad]

does your gas tank have presser when you undo the gas cap?

 

[thirdminor]

Ill have to check? I changed fuel filter, and got mouth fuel of fuel making sure its getting to carb. Im perplexed???

 

[b-rad]

you should check the coil to see if it keeps sparking when you turn it over

 

[b-rad]

rebuild your carb sound like pilot jet if it dont ideal

 

[b-rad]

or fuel pump in carb!

 

[lilevo]

You should give us more info on exactly what happened, how long it ran afterwards, and check the flywheel key. It could have sheared and ran fine. Over time the flywheel could slightly move causing these issues.

It doesn't really matter if he has spark. Obviously he has spark if it's starting. He can have spark all day long, but he won't know if it's sparking at the wrong time. A sheared flywheel key has some of the symptoms you are experiencing.

If the engine was abruptly stopped by something shearing in the driveline then I would look into the flywheel key!

 

[b-rad]

but it starts when he adds gas ! so no idle pilots plugged ,or fuel pump in carb ! what kind of gas you running non ox or regular ?

 

[b-rad]

if thats the stock motor never been rebuilt that flywheel is probably never movin key or not that thing is on there ive been there !

 

[thirdminor]

Ok.. more info... Beached ski, put trailer in water. Fired ski messed around for min put on trailer. Took home, ran wash ski out put in garage.... 2 weeks later gonna ride surf put ski in water fire off no propulsion... running fine.... put back on trailer took home started washed out... took apart next day thinking shaft had spun to find that mid shaft broken behind coupler.. order new from sbt.. put all bake together a week later.... will not isle.. will fire off.. fuel lines never disconnected from carb motor just slid forward but did remove tank and batt..... will look at diafram this week

 

[thirdminor]

oh running non ethanol

 

[thirdminor]

Engine never abruptly stopped. Dont know exactly when mid shaft broke

 

[b-rad]

guessing carb bro good luck hope thats it

 

[KTM434]

I'll buy it as is, how much?

 

[Quinc]

Pull out your plugs and make sure they have consistent spark. I had an issue where I would have spark for 5-10 seconds and than it would go out.

 

[Ben Holloway]

Pull out your plugs and make sure they have consistent spark. I had an issue where I would have spark for 5-10 seconds and than it would go out.

Had the same sort of problem, coil would spark a couple times, then lose energy ebox was full of water, re sealed ebox and put in a new coil and it was good to go...