Pinging in an engine is the result of the air and fuel mixture within an engine cylinder igniting incorrectly, explains Cars Direct. This may be caused by using gasoline with an insufficient octane rating, carbon buildup within the cylinder itself or improperly functioning spark plugs.Continue Reading
When the fuel/oil mixture within an engine cylinder combusts, it normally does so in a progressive fashion rather than igniting all at once. This allows the force of the ignited fuel to provide controlled pressure on the piston, resulting in even thrust. If the ignition stutters or the gas ignites all at once, this creates a pinging sound and puts undue stress on the piston and cylinder, reducing performance and decreasing the life of the engine.
High-octane gas is designed to prevent preignition of the air/fuel mixture. Using a higher-octane gas than normal can reduce pinging. Carbon buildup on the cylinder wall can also cause improper ignition and pinging. All U.S. gasoline contains detergents. Adding a detergent to fuel often helps clear out accrued deposits; additive detergents can be found at automobile supply stores. Faulty spark plugs can also cause improper ignition. If pinging persists, visit a mechanic to verify all spark plugs are in proper working order.Learn more about Engine
A piston engine, also known as a reciprocating engine, works by expanding hot gases (a mixture of air and fuel) within a cylinder in order to push a piston, which in turn rotates a crankshaft and generates power. Unlike early steam engines, modern piston engines do not require an external source of hot gases, hence they are known as internal combustion engines.Full Answer >
The term "lean fuel mixture" is used to refer to an air/fuel ratio that has more air than fuel, which is often an indicator of issues such as an empty or almost empty fuel tank or malfunctioning fuel pump or fuel injectors. Vehicles that are experiencing a lean fuel mixture will often not start, and this problem can be solved through troubleshooting measures including adding more fuel to the tank even if the fuel gauge says the tank isn't empty and listening for the proper function of fuel pumps and injectors. Tools such as a funnel or even a medical stethoscope can be used as diagnostic tools to listen to the fuel pumps and injectors.Full Answer >
An internal combustion engine's cylinder head performs several functions including housing the exhaust and intake valves, the fuel injector and necessary linkages, and passages for the fuel and air mixture. In water-cooled engines, the cylinder head also contains integral ducts and passages for the engine's coolant to facilitate the transfer of excess heat away from the head and, therefore, the engine in general.Full Answer >
A choke is a valve installed in a carburetor that restricts air flow, which enriches the fuel-air mixture when an engine is started. According to Autorized.com, a choke is designed to help engines start more quickly and efficiently when they are cold.Full Answer >