Hence the vapor pressure doesn’t escalate too much to trigger a vapor lock.
![vapor lock vapor lock](https://vapesourcing.com/images/202101/ltq-vapor-lock-cbd-atomizer-front-view.jpg)
Usually, all fuel tanks have vents to allow the escape of fuel vapors into the atmosphere. The engine, as a result, starves from fuel, and hence it may not start again after it has been shut down after a heated operation. This heating effect worsens when the saw is run at wide-open throttle (WOT) or when the carburetor is adjusted to a lean setting.Īs the vapor pressure builds up, the carburetor faces difficulty extracting gasoline through the fuel lines due to the backpressure created by the vapors. As a chainsaw heats up, the vapor pressure in the fuel lines increases. Vapor lock is a condition when gasoline vaporizes excessively in the fuel tank and the fuel lines. In some cases, it wouldn’t start up just after you’ve turned the engine off. If your chainsaw engine has a vapor lock, it will start perfectly, but as it heats up, it would act as if it’s run out of fuel. How do I Know if a Chainsaw Engine has a Vapor Lock? 3 How do you Stop a Chainsaw Vapor Lock?.2 How do you Fix a Chainsaw Vapor Lock?.1 How do I Know if a Chainsaw Engine has a Vapor Lock?.The fuel can vaporise due to being heated by the engine, by the local climate, or due to a lower boiling point at high altitude. Restarting the engine from this state may be difficult. This disrupts the operation of the fuel pump, causing loss of feed pressure to the carburetor or fuel injection system, resulting in transient loss of power or complete stalling. It occurs when the liquid fuel changes state from liquid to gas while still in the fuel delivery system.
![vapor lock vapor lock](https://cimg8.ibsrv.net/gimg/www.ford-trucks.com-vbulletin/2000x1504/2020_10_31_15_46_02_e56f9bc0bbca0221e2f8cc5ece13e379da5b519f.jpg)
Source: FAA Aviation Maintenance Technician Powerplant Handbook (FAA-H-8083-32)Ī problem that mostly affects gasoline-fuelled internal combustion engines. If the vapor pressure of the bubble is high enough, it will block the fuel and keep it from flowing to the engine. If the fuel in the line between the tank and carburetor is heated enough for the fuel to vaporize, a bubble will form in the line. Source: FAA Aviation Maintenance Technician Airframe Handbook (FAA-H-8083-31)Ī condition of fuel starvation that can occur in a reciprocating engine fuel system. Source: FAA Airplane Flying Handbook (FAA-H-8083-3A)Ī condition in which vapors form in the fuel lines and block the flow of fuel to the carburetor.
![vapor lock vapor lock](https://i.ytimg.com/vi/cadNfSNi_Oc/maxresdefault.jpg)
On fuel-injected engines, the fuel may become so hot it vaporizes in the fuel line, not allowing fuel to reach the cylinders. Vapor lock may occur as a result of running a fuel tank completely dry, allowing air to enter the fuel system. You'll love them with their polished learning environments and world's best and clearest content (please do give them a try.).Ī condition in which air enters the fuel system and it may be difficult, or impossible, to restart the engine.
VAPOR LOCK SOFTWARE
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