
It starts as usual or is slightly hard to start.In this first scenario, we will look at what may be causing your problems when the ATV: Fuel issues on cheap 50-110cc youth ATVs that won’t stay running.Blocked air filter causing the bike to run rich.The fuel/air mixture is not set correctly.When the ATV starts but will only stay running for a short time.The vacuum petcock is not working properly.Low fuel pressure due to a bad fuel pump.When the engine keeps stalling or bogs down or stalls when applying throttle.Polaris ATVs with ETC (engine throttle control) switch: The throttle cable is adjusted incorrectly.The carburetor needle valve is stuck closed in the float bowl.The fuel cap may not be venting correctly, or the fuel tank venting system is blocked.


The carburetor is dirty and needs to be cleaned.The fuel lines or fuel filter may be restricted, clogged, or kinked.The intake boot is damaged or not seated properly.
