What is vapor lock on chainsaw?
What is vapor lock on chainsaw?
Vapor lock occurs when the fuel (usually gasoline) within the fuel delivery system overheats and vaporizes too rapidly. The resulting excess gas bubbles accumulate to the point of actually blocking normal fuel delivery.
When does vapor lock occur in a car?
Vapor lock occurs when fuel overheats and vaporizes in a fuel line or carburetor, preventing proper fuel flow. Although common in older vehicle models, it wasn’t until the appearance of the modern fuel injection system that vapor lock became more prevalent in carbureted engines.
Why is vapor lock less common in Formula One?
Vapor lock is also less common in other motorsports, such as Formula One and IndyCar racing, due to the use of fuel injection and alcohol fuels ( ethanol or methanol ), which have a lower vapor pressure than gasoline. The higher the volatility of the fuel, the more likely it is that vapor lock will occur.
When does vapor lock occur in a gravity feed system?
The problem is more likely in hot weather or high altitude in either case. Gravity feed fuel systems are not immune to vapor lock. Much of the foregoing applies equally to a gravity feed system; if vapor forms in the fuel line, its lower density reduces the pressure developed by the weight of the fuel.
What causes a fuel line to become a vapor lock?
The fuel in the line near the engine does not move and can thus heat up sufficiently to form a vapor lock. The problem is more likely in hot weather or high altitude in either case. Gravity feed fuel systems are not immune to vapor lock.
Vapor lock occurs when fuel overheats and vaporizes in a fuel line or carburetor, preventing proper fuel flow. Although common in older vehicle models, it wasn’t until the appearance of the modern fuel injection system that vapor lock became more prevalent in carbureted engines.
What can I do to avoid vapor lock?
There are a few other things you can do to minimize vapor lock. If you want to stick with a mechanical pump, stay away from steel lines, which offer no insulation from heat. Use black nylon braided fuel hose, and be sure to route it away from all heat sources.
What causes a fuel pump to vapor lock?
There are several symptoms that may point to vapor lock. Lose of fuel delivery system pressure or flow (volume) (this may be caused by a restricted fuel filter or insufficient voltage to the fuel pump) Faulty check valve in an electric fuel pump assembly
How does high altitude contribute to vapor lock?
High-altitude geographic areas can contribute to vapor lock as well by lowering the fuel boiling point.
