What causes a Honda ATV to backfire?
ATVs usually backfire because of a short, sudden moment where the engine is running too rich or too lean. That means that it’s either getting more fuel than it needs for the amount of air it takes in, or else not enough.
Why does my ATV backfire when I start the engine?
To put it differently, when the ATV engine receives an overly rich mixture of air and gas, the excess fuel in a cylinder doesn’t get burned in time for the exhausting process of the engine cycle. As soon as exhausting starts, the cylinder’s exhaust valve opens, which immediately igniting the unburned fuel because of the influx of extra air.
What to do when your ATV won’t start?
If your ATV doesn’t crank at all when you’re trying to start it, there are a few basic things to look into. 1. Make sure the kill switch/run switch is in the “ON” or “RUN” position. You’d be surprised how often the solution to an ATV that won’t start is forgetting to turn on the kill switch.
Why is my ATV not getting a spark?
You will find the proper steps for troubleshooting an ATV that is not getting a spark further down this post. If the spark plug is still dry after cranking the engine for a few seconds, you know that fuel, for some reason, is not getting to the cylinder.
Why does my ATV pop at the wrong time?
When the popping is irregular, extremely loud, and gets accompanied by a power loss, the ATV’s ignition might not be working properly. This means that it’s firing at the wrong time, which is usually because of failing ignition coils, failing high tension leads, or spoilt connectors and switches.
To put it differently, when the ATV engine receives an overly rich mixture of air and gas, the excess fuel in a cylinder doesn’t get burned in time for the exhausting process of the engine cycle. As soon as exhausting starts, the cylinder’s exhaust valve opens, which immediately igniting the unburned fuel because of the influx of extra air.
If your ATV doesn’t crank at all when you’re trying to start it, there are a few basic things to look into. 1. Make sure the kill switch/run switch is in the “ON” or “RUN” position. You’d be surprised how often the solution to an ATV that won’t start is forgetting to turn on the kill switch.
What causes a Honda Foreman to backfire?
It’s my belief that the vacuum slide in the carb is responsible. When on overrun with the throttle off the butterfly in the throttle body is almost completely shut (slightly open for tick over) but the slider and needle is being raised by the vacuum, there will be enough draw to pull fuel from the main jet but it won’t be atomised properly.
You will find the proper steps for troubleshooting an ATV that is not getting a spark further down this post. If the spark plug is still dry after cranking the engine for a few seconds, you know that fuel, for some reason, is not getting to the cylinder.