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engine misfire
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  1. Polaris XP
    I have a 2014 ranger 800 efi with a constant random misfire, no codes. Plugs are light grey, looks like its lean. Good fuel pressure, clean air filter, wiggled and pulled on all the wires going to the tb, nothing changed it. I unplugged each injector separately, and the remaining cylinder fired...
  2. Polaris Sportsman
    Quad is 2008 Sportsman 500 EFI....What happens with the quad is when I first start it up it idles and runs fine after quad warms up I notice a engine misfire at a specific RPM range of 4600 - 5100 below and above this range the quad runs fine. I'm wondering if the TPS has a issue where when it...
1-2 of 2 Results