The heat generated boils the gasoline and causes a vapor lock. Running at wide-open throttle (WOT) your chainsaw results in overheating. You may save the trouble of fixing repeatedly on follow some useful tips and avert the vapor locks on your chainsaw: 1. Vapor locks may be frustrating to finish. Preventing a chainsaw from vapor lock is possible if you avoid overheating or running it lean.Įnsure you allow the engine to stay idle before shutting it off. It may unnecessarily increase the fuel consumption of the device.Īvoid adjusting the carburetor to a lean setting, as it may cause overheating and aggravate the vapor locking effect. However, there is the possibility that after fixing the vapor lock, your engine may run richer and have trouble running. They do so to enrich with more fuel the mixture that was facing obstruction due to vapor lock. ![]() Some users turn on the choke and set it to a rich setting their carburetor encountering a vapor lock. It will help cool down the vapors and fix the vapor lock. To make the process fast, you can pour cold water on the engine area and the carburetor. If you try to start immediately, it may be more time-consuming. You may stop your engine and allow it to cool for a while. Once it cools, inside the fuel lines it will condense. The safest way is in ascertaining these vapors cool down. ![]() Besides, if these vapors are hot, they may cause skin burns. It is because it can ignite and start a fire, in a closed environment. It may turn risky if you let out highly pressurized fuel vapors escape into the atmosphere. You can do this by opening the fuel tank cover and letting the vapor escape.Īs the pressure of the vapor falls, the fuel flow eases down, and the engine starts. The fastest way is to remove the vapor by letting them escape into the atmosphere. These vapors exert back pressure, obstructing the fuel flow. How to fix a vapor lock in a chainsawįixing a chainsaw vapor lock means allowing your chainsaw to cool before starting, and here are the ways: Fastest Way:įuel vapors are trapped in the fuel lines and the carburetor. It means it is time you confirm the engine has a vapor lock. If so, you may shut the engine off and restart it, but it will not start. In case, you experience an overheated chainsaw that fails to start, you may check the tank vents to understand if anything is clogging.Īlso, during vapor lock, the chainsaw begins fine if it is cold and functions perfectly.Īs the tool starts heating up, it shows signs of bogging down and gives a run-out-of-fuel feel. Therefore, the vapor pressure does not escalate much triggering a vapor lock. Most fuel tanks feature vents allowing fuel vapors to escape into the atmosphere. With the vapor pressure building up, the carburetor has trouble extracting the gasoline due to the backpressure of the vapors which hinders the fuel line.Īs a result, the engine starves due to fuel and does not start once it is shut after an operation where it gets heated. Thus, the heating worsens, and the saw starts running at WOT ( wide-open throttle). Vapor lock is when gasoline vaporizes in the fuel tank and the fuel lines excessively.Īs the chainsaw heats, the vapor pressure increases in the fuel lines. ![]() While, sometimes, it fails to start even after you turn the engine off. If a chainsaw engine experiences a vapor lock, it will work perfectly, but the moment it starts heating, it will act as though it runs short of fuel. How to know if a chainsaw engine has a vapor lock Make sure to run the engine idle before the shutdown for a few minutes. Thus, it deprives the engine of receiving enough fuel.īesides, in most cases, the fuel tank cap opens and allows the vapor to escape. The vapors of the gasoline accumulate in the fuel lines. ![]() A chainsaw vapor lock is a trouble that begins after a run.
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