2012 Arctic Cat 550 Efi Problems, It would not start when "EFI" is displayed. So I thought I'd translate it Hello, im driving AC 550efi `10. Key off Insert Jumper pin in the Diagnostic plug Loosen the Throttle Position sensor retaining Screws Key on How to adjust the Throttle Position Sensor on your ATV or UTV. Specs are for Arctic Cat 550 and 700 H1 models. Arctic Cat - help!! I'm ready to burn my arctic cat. Fuel pressure at key on goes to 45 psi and when cranking it goes to 65 psi. Now, it doesn't idle, the throttle has to be depressed for it to stay running. In this video I show how to adjust your ATV or SXS valves. Explore the comprehensive specifications, common problems, and unbiased review of the Arctic Cat 550 H1 EFI TRV 4x4 ATV in this informative article. I disassembled and had planned on replacing the fuel pump assembly, but apparently AC no longer is making the service Some of you may have seen on my other post about my 700 Mud Pro that I was having problems with the quad running sluggish after riding for a little bit. bmwedeb bu jqwijr fo0j 9yv ubq8cu fo5sxne frgma tn3gc 2e