Why does my Polaris Offroad Vehicle engine run irregularly, stall, or misfire?
- KKimberly ReidAug 21, 2025
If your Polaris Offroad Vehicle engine runs irregularly, stalls, or misfires, several factors could be the cause. Start by inspecting, cleaning, and/or replacing any fouled or defective spark plugs. Also, ensure the spark plug gap and heat range are correct. Check for loose ignition connections and tighten them. Water in the fuel, low battery voltage, a kinked or plugged fuel tank vent line, incorrect fuel, or a clogged air filter can also lead to these issues. Replace the fuel, recharge the battery to 12.8 VDC, inspect and replace the vent line, replace with recommended fuel or inspect and clean or replace the air filter, as needed.