FLOODING: Describes a situation where if the fuel mixture is overly rich or an excessive amount has reached the cylinders will make starting the vehicle difficult and sometimes even impossible.
FLOW CONTROL: Describes the regulation of the amount of fluid passing through a pump.
FLOW DETACHMENT: Describes the deviation of the gas flow into the cylinder from its ideal path.
FLOW RATE: Describes the quantity of liquid conveyed by a pump defined by per unit of time
FLUID CAPACITIES: Describes the total amount of fluids that a vehicle can absorb oil in the crankcase, water in the radiator and cooling system, fuel in the gas tank, among others.
FLUID CLUTCH: Describes a hydraulically activated coupling through which power can be transmitted.
FLUID COUPLING: Describes a mechanical connection between the engine and transmission through the clutch on a manual transmission.
FLUID FLYWHEEL: Describes a type of fluid coupling in which the flywheel is the driving rotor.
FORCED-FEED LUBRICATION: Describes a lubrication system used in all modern four-stroke engines. An engine-driven pump forces the oil through passages in the engine castings to the main areas of potential stress in the engine.
GAUGE: Describes an instrument that registers the quantity of any fluid.
GRAVITY FEED: Describes a type of fuel supply system used in some older cars where the gas tank was mounted higher than the carburettor.
GLAND: Describes a seal that stops fluid under pressure from leaking past a rotating shaft.
HIGH-SPEED DIRECT INJECTION (HSDI): Describes a system for rapid injection of fuel into a diesel engine.
IDLE CIRCUIT: Describes a situation that occurs in an engine running at idle and low speeds, where the carburettor system supplies enough fuel to the engine to keep it running.
IDLE JET: Describes a system used on a carburetted vehicle where a jet within the idle system supplies a constant amount of fuel for the formation of the idle mixture
IDLE LIMITER: Describes any device that has the role of limiting maximum richness of the idle air/fuel mixture in the carburettor.
IDLE LIMITER CAP: Describes an external cap that sits on the head of the idle mixture adjustment screw to maintain pre-set emissions levels.
IDLE MIXTURE ADJUSTMENT SCREW: Describes a tapered screw located on the outside of the carburettor through which the proportion of fuel-air mixture is controlled.
INDUCTION PIPE: Describes the alloy manifold duct situated between the throttle and cylinder head used to control many engine-related functions.
INDIRECT INJECTION: Describes a type of fuel injection in which the air-fuel mixture does not enter the main combustion chamber but instead into a pre-chamber.
INDUCER: Describes an action that takes place in a turbocharger, where the section of the compressor wheel draws air into the compressor
INJECTION PERIOD: Describes a time frame, controlled by an electronic control unit, when fuel is sprayed into the intake ports during fuel injection.
INJECTOR OPENING PRESSURE: Details the specific point at which injection pump fuel pressure overcomes nozzle valve-spring resistance so that fuel is injected into the pre-combustion chamber
INJECTOR: Describes the pump system found in a fuel injection system that injects a measured amount of gasoline into the intake manifold, varying the pulse duration increases or decreases the amount of fuel passed through the injectors.
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