How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Louie Your Own Question
Louie, Technician
Category: Motorcycle
Satisfied Customers: 12580
Experience:  25+ yrs. experience
Type Your Motorcycle Question Here...
Louie is online now
A new question is answered every 9 seconds

I have a 2009 Polaris Sportsman 400 HO. I'm assuming carb.

Customer Question

I have a 2009 Polaris Sportsman 400 HO. I'm assuming carb. problems. It will start and idle fine , but sputters, sometimes backfires and dies when trying to accelerate. It began suddenly right of the trailer. Haven't had any trouble like this before. Changed fuel out but didn't seem to help.
Submitted: 1 year ago.
Category: Motorcycle
Expert:  Louie replied 1 year ago.

Hi and welcome to JustAnswer,

Thank you for the question and your patience. Should you still need assistance for information purposes only...

Initially, it would appear to be a fuel delivery issue. Proposed preliminary tries (if have not been done):

  • check the vacuum feed from source to the fuel pump;
  • check/replace the fuel pump itself;
  • inspect integrity of fuel lines;
  • determine amount of fuel in the carb bowl through the drain hose by loosening the drain screw;
  • and check the burn color of the sparkp plug tip;
  • as well as inspect the air box, filter and coupling to carb.