What would cause a four wheeler to smoke?
Smoke can be an indication of bad cylinders, seals, gaskets or something similar, usually accompanied by gasoline or oil burning in the engine. Routine maintenance helps prevent many smoke-related issues, but a hard crash, bad cylinders or other causes may lead to serious problems in your ATV.
What causes a Polaris Sportsman 500 to backfire?
I have a 99 Polaris sportsman 500 that is backfiring through the carburetor. It will start fine and idle perfect, but as soon as I touch the throttle it’ll pop and backfire like crazy at the carb. I can let go of the throttle and it’ll settle back to idling.
What causes a carburetor to backfire when running lean?
What Causes a Backfire. Generally, a backfire is caused by an imbalance in the air to fuel ratio. Either the engine is not getting enough fuel, which is also called running lean, or the engine is getting too much fuel, which is also called running rich.
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 does it mean when a Sportster backfires?
Ok, due to different terminology used by different people, I’m going to assume that by “backfire”, you mean it pops through the exhaust system when you back off the throttle.
What Causes a Backfire. Generally, a backfire is caused by an imbalance in the air to fuel ratio. Either the engine is not getting enough fuel, which is also called running lean, or the engine is getting too much fuel, which is also called running rich.
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.
Why does my ATV have black smoke coming from it?
Black smoke is a sign that your ATV is burning gasoline. Gasoline burns in your ATV when the ratio of fuel to air is higher than usual. This is called a rich fuel environment, and it is not good for the ATV. Fixing a rich fuel environment could involve a number of things. Hopefully, for your sake, it is nothing major and calls for a simple fix.
What does a carburetor backfire sound like?
A carburetor backfire describes the small explosion that sometimes occurs when starting up a car. It generally makes a loud sound, like a gunshot, and occasionally is accompanied by a visible flame.