150cc trailmaster xrx help

[Bodyman200]

I was wondering if there was anybody in the Dayton/Springfield Ohio area that actually works on these. I just have some running issues on mine that I cannot figure out any help would be appreciated. We have replaced the following carb,Cdi,stator, coil wire,spark plug,flywheel and new head and piston and cam
Runs for a short time then dies any help would be appreciated. We are at our wits end.
Thanks

[Creektrails]

I've just been working on these a short bit myself but when it dies is there gas in the float bowl of the carb?

[ckau]

This post is late but maybe this will help.
these motors have a tendency to burn fuel faster than the stock supply line can deliver at WOT. Especially when running WOT for any extended Length of time over a few minutes.
Do away with any sort of vacuum operated flow valve at the tank. These valves are restrictive and problematic. Use fuel line 5/16 min. dia. straight from the tank and a large capacity inline fuel filter.

[liduno]

Clogged fuel vent can cause the same symptoms too.