97' spx -grey lines?

[kloock959]

97' spx 787 motor. all carb settings are stock, fuel filters clean, jets clea, 155 psi on each cylinder. I can get on and ride all day below 1/2 throttle, as soon as you hold wot it will die out like loss of fuel, if you hold wot it will die out (not compleatly, boggs a bit) and then take off again, this will continue if held open. if I am to shut the ski off and sit for a few min. i can start back up and take off wot, running great for about 1/2 mile or so then back to same issue. Could this be caused by grey fuel line? Sorry for the long post.

 

[Bills86e]

My guess is exhaust leak at Stinger. 2nd is bad selector valve.

 

[kloock959]

stinger meaning were the clamp is??

 

[Bills86e]

Yeah. Big stainless doublem has gasket underneith that leaks. Tuned pipe-funnel pipe.

 

[kloock959]

sounds good i'll double check that. wouldn't i get exhaust film around the gasket if it were leaking. does the selector plug up or deteriorate when they fail

 

[Bills86e]

yes. We advise replaceing with a plastic valve.

 

[kloock959]

well, checked stinger pipe no exhaust residue around any part. seems as though this ski has a plastic selector in it already. should i replace due to internal orings? seems to act the same when it is on main or res. Should I be going up in main jets. Haven't checked the rectifier yet, will do that when i get home.

 

[kloock959]

replaced the fuel lines and selector, runs great. seems to be more the cause of my selector switch. thanks for the help