POINTS GAP: Describes the width of the gap between the contact breaker points when fully open that is measured using a feeler gauge.
PLUG CAP: Describes the device that sits on the end of the high-tension wire that comes from the coil and is mounted on the spark plug.
PLUG GAPPING: Describes the procedure of adjusting the side electrode on a spark plug to create a proper air gap between the plug and the centre electrode.
REACH: Describes the distance from the sealing washer of a spark plug to the end of the thread.
RESISTOR SPARK PLUG: Describes a type of spark plug containing a resistor designed to shorten both the capacitive and inductive phases of the spark to suppress radio interference and lengthen electrode life.
SELF-CLEANING: Describes the ability of a spark plug to burn off the deposits of carbon and oil that build upon it.
SPARK: Describes a situation when a current of electricity bridges a gap between two electrodes, causing one of the essential factors in a combustion engine.
SPARK ADVANCE: Describes the procedure that causes a spark plug to fire earlier through altering the position of the distributor breaker points in relation to the distributor shaft.
SPARK AIR GAP: Describes the gap between the electrodes of a spark plug.
SPARK DELAY VALVE (SDV): Describes a type of valve found in the vacuum advance hose that delays the vacuum to the vacuum advance unit during rapid acceleration.
SPARK DURATION: Describes the burning time of the arc following the initial flashover between the spark plug electrodes that continues till the residual energy levels begin to fall.
SPARK IGNITION: Describes vehicle ignition initiated by an electric spark in a spark ignition engine.
SPARK PLUG: Describes a device that contains dual electrodes produce a spark to fire the fuel charge across which electricity jumps to ignite an internal combustion engine.
SPARK PLUG BOOT: Describes cover made from moulded rubber that fits over a spark plug terminal.
SPARK PLUG CABLE: Describes the connecting system that integrates spark plug connectors, spark plug leads, distributor cap, distributor connector, high-voltage cable and the ignition coil connector
SPARK PLUG CABLE LOOM: Describes a T-shaped chrome-plated steel holder designed to hold spark plug cables neatly in place as well as eliminating the leakage of ignition.
SPARK PLUG GAP: Describes the minor space between the centre and side electrodes of a spark plug across which the spark must jump to ignite the air-fuel mixture in the combustion chamber.
SPARK PLUG INSERT TAP: Describes a specialist tool used to enlarge and tap new threads in damaged spark plug holes that will allow them to accept spark plug inserts
SPARK PLUG PLIERS: Describes a specialist tool very similar in appearance to pliers with specially shaped jaws that will securely grip spark plug boots for removal and installation, and insulated handles for a shock-proof grip
SPARK PLUG SHELL: Describes the metal body of the spark plug enclosing the lower part of the insulator
SPARK PLUG WIRE: Describes the copper core high-voltage wire with thick insulation that leads to the spark plug from the distributor.
SPARK PLUG GAUGE: Describes a tool used for checking the width of spark plug gaps that includes an electrode adjusting tool that can alter the gap between the electrodes if required.
SPARK PLUG WIRE COVER STRIP: Describes the connecting system that takes in the spark plug connectors, spark plug leads, distributor cap, distributor connector, high-voltage wire, and ignition coil connector
SPLIT ELECTRODE SPARK PLUG: Describes a type of spark plug with a V-shaped side electrode.
TIP: Describes the end of a spark plug insulator, closest to the electrode.
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