anyone have a fuel regulater fail?

[925rotax]

anyone have a fuel regulater fail?have 5.5-6psi at new pump at idle,trx starving for fuel at wot, air fuel lean,carbs cleaned and filters replaced, mains clean, lines all replaced, tank steam cleaned, intake filter replaced,

 

[new24stroke2]

Where do you have your fuel pressure gauge mounted.Can you see what it's doing under boost.If you are running 10 psi the fuel pressure gauge should read 15.5 or 16.This how I found out that the header was broke on my sled.So if the fuel regulator is NFG the gauge will tell you.

 

[925rotax]

thanks ,ill move the gauge up near the bars to be visable