ox66 250 hp

[the dog house]

The motor runs fine at idle and up to 4300 rpms,when i try to give it more throttle the engine dies out and bucks..once i back the throttle back a little bit it runs fine..The motor use to run up too 5100 rpms.does this sound like a vst filter problem???

 

[TomS]

Or a malfunctioning O2 sensor.

-- Tom

 

[Parker23]

I would try vst filter, cheaper and easier.

 

[Pain Management]

Thats what mine was doing a few weeks ago but would not let me go over 2000 rpms. I had a very clogged VST with white gunk. There was no warning, One day ran fine, the next had the problem. Cleaned the VST filter with carb cleaner and off I went with no other issues.
George

 

[the dog house]

Thanks for the input .cleaned the filter it was very dirty.runs great now.