NEED HELP 2011 Pro Running Rough

[RZRNUT]

I have 1400 miles on my Pro. 2 weeks ago it started running rough. At 1/4 to 1/3 throttle runs fine but after that it runs rough and I only get 7300 RPMs. Took it to the dealer they put in a new TPS and a egt probe. Still runs the same, awful. Put in new plugs and cleaned the caps, had black dust inside, put some electric grease on plugs. Still runs like crap. Very consistent. Never pulls hard or gets the RPMS up. I Put in new springs and weights. Could it be the injectors or fuel pump? This will be the 3rd trip to the dealer. Any advice will help. Thanks.

 

[aebsledder]

How does it idle?

 

[RZRNUT]

It idles just fine.

 

[aebsledder]

Fuel pump

I had an injector go bad and it some similar symptoms, but not exactly how you described them. I think you may be on to something with the fuel delivery though. Good luck.

 

[gopher-it!]

pro

Check exhaust valve bellows and make sure all lines are clear, including soleniod line going into belly pan. Mine was plugged.

 

[Old Scud-doo]

IF all else fails, pull it apart and check the rings and pistons. Sorry to be the guy to tell you that but I fought a bad running machine for months prior to pulling it apart to find chipping/flaking rings and damaged pistons. Was the last thing I did and machine runs great again.