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HOW TO INSTALL SPARK PLUG INDEXTING WASHERS HOW TO

Removing this, and disconnecting the electrical connectors will allow the coil to be pulled off the plug.

COP equipped cars are also push fit – but there's generally a bolt securing the coils to the cylinder head.

HT leads are 'push fit' so require a firm pull to remove them from the plug – Don't pull the actual leads, as this can damage them, instead pull the rubber 'boot' as near to the spark plug as possible.

Removing either the High Tension Leads (also known as Spark Plug Wires), or for cars with a 'Coil-On-Plug' (COP) set-up removing the ignition coils.

They may be immediately apparent, or hidden under an engine cover, or beneath pipework. With the engine cold locate the plugs.Removing and replacing spark plugs is very simple – getting to them, on some engines, can be a little tricky. Removing the HT lead, or coil on plug will reveal the base of the spark plug. They can generally be found on the top, or side of the engine, sometimes under an engine cover, and sometimes not.Įach spark plug will have an HT lead, (on older cars) or a coil on plug attached to the top of it. So a four cylinder car will have four spark plugs. In general each cylinder has one spark plug (there are cars with two spark plugs per cylinder, but these are in the minority). This current causes a spark to jump across the plug's electrodes which ignites the compressed fuel/air mixture within the cylinder. The spark plug's job is to deliver an electric current into the engine's combustion chamber.

HOW TO INSTALL SPARK PLUG INDEXTING WASHERS HOW TO

Have you ever wondered what a spark plug's job is? How to find them, and how they are tested? Well read on and we'll give you the answers.