2008 kawasaki ultra 250x stalls after letting off throttle

[Jobby]

Pls oh pls give me the answer to this problem my 250x only got 42 hrs

What up
I got a 2008 kawasaki ultra 250x idle fine when I hit the throttle runs exalent as soon as I let off completely dies . I have replaced tps ,iac spark plugs twice , upgrade pump to 300x specs , new prop ,cleaned out intercooler, checked supercharger belt and pullys, removed gas ,checked for any ehaust leaks, exalent compression on cylinders, new bypass valve, new throttle body, new cable for throttle body to trigger, and its throwing no codes, just ordered new wires and coils .I can't figure out what's going on here so any suggestions would be greatly appreciated

I only got 42 hrs on my 250x now only runs while on the hose but put in the water gets to about 2300 rpm then just dies no codes nothing done all that you have but still just dies

[ghost0511]

I finally gave up put mine in the shop will post as soon as I find out what problems are

[ghost0511]

I finally gave up put mine in the shop will post as soon as I find out what problems are

Brought jetski to a good kawasaki dealership timming was off parts were replaced timming set right now running better but it's running super rich and still doing same issue.
Exallent compression , no codes , full boost ,nothing pulling up on computer everthing seems good but still have this problem still at shop so if I find out anything will let you no if you have any input would be greatly appreciated

[ghost0511]

Kawaski called today said new i.a.c was broken that I just replaced . Iac motor was engaging but metal part in side was broke not engaging it snaped so there replacing when come in next week will let you know if that was the problem

[ghost0511]

Finally back on the water come to find out after going to 3 kawasaki dealers and year later took to regular boat mechanic found out had hole in throttle body leaking air so hopefully this helps anyone having same problem before you go spend thousands with shitty ass dealership mechanics

[Shaun_dodds]

I replaced The idle air control with o ring and at shut down yea it makes the clicking noise . i just got new coils and wires in still no luck having the same problem so im gonna take to shop have it diagnosed and will keep you posted on whats the problem Is. appreciate all the help

Did you ever find exact problem of why it's cutting out after letting off throttle. My 07 250x is starting doing the same thing.