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Most choke valves in engines are butterfly valves mounted upstream of the carburetor jet to produce a higher partial vacuum, which increases the fuel draw. [ 1 ] In heavy industrial or fluid engineering contexts, including oil and gas production, a choke valve or choke is a particular design of valve with a solid cylinder placed inside another ...
Flooding can also occur if the choke has been over applied or has malfunctioned. A severe form of engine flooding occurs when excessive liquid fuel enters the combustion chamber. This reduces the dead volume of the combustion chamber and thus places a heavy load on the starter motor, such that it fails to turn the engine. Damage (due to ...
The system within a carburetor that meters fuel when the engine is running at low RPM. The idle circuit is generally activated by vacuum near the (near closed) throttle plate, where the air speed increases to cause a low-pressure area in the idle passage/port, thus causing fuel to flow through the idle jet.
The 'choke' mechanism on an SU carburettor usually also incorporates a system for holding the throttle plate slightly open to raise the engine's idling speed and prevent stalling at low speeds due to a rich mixture. The beauty of the SU lies in its simplicity and lack of multiple jets and ease of adjustment.
Carburetors are provided with a float chamber to provide a constant hydrostatic head of fuel above the carburettor's metering jets, thus a constant pressure. The float chamber itself does not vary the pressure according to demand, but it does vary the supply flowrate with demand, to keep this pressure constant.
Well fret not, because there are five easy ways to open a stuck jar regardless of why its stuck in the first place. Bonus: Almost all of them use items you already have in the house.
The choke provision for the Quadrajet was initially in the form of an intake-mounted, heat sensitive spring, (divorced choke), often referred to as a heat riser. The spring connected to a rod that actuated the choke mechanism on the passenger's side of the carburetor, and relied on intake manifold's temperature.
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