2011 250 sxf . owned
When you "give it gas" you are opening the throttle.
At that point the fuel system is supposed to supply the engine with more fuel to maintain the air/fuel mixture.
Check for anything that might be clogged like filters, hoses, fuel passages, etc.
If it is still under warranty you could void your warranty
if you work on it though in this case a warranty is meaningless if you have taken it in 6 times.
I've seen models where you could replace everything and
a week later it would refuse to run.
Sometimes it's better to leave the thing at the junk yard and buy a new one but that doesn't happen often.
2011 KTM 250 SXF
on Nov 02, 2017