Ignition Parts

When working with Ignition Parts, the components that generate the spark needed to ignite the fuel‑air mixture in a gasoline engine. Also known as ignition system components, they are essential for reliable start‑up and smooth running.

A key piece of any ignition system is the spark plug, a device that creates the electrical spark inside the combustion chamber. When a spark plug fires at the right moment, the engine produces power; when it fouls or gaps are off, you’ll notice misfire symptoms, signs like rough idling, loss of power, or an uneven exhaust note. Those symptoms directly influence engine performance, how quickly the car accelerates, how smoothly it runs, and how efficiently it burns fuel. In short, Ignition Parts encompass spark plugs, wires, and coils, and they require proper torque, gap settings, and regular testing to keep the engine humming.

Why spark plug health matters for fuel economy and power

Every time a spark plug misfires, the engine compensates by using more fuel, which hurts fuel economy and raises emissions. A fresh set of plugs can improve miles per gallon by up to 5% in many UK models, according to recent garage data. The gap between the central and ground electrodes must match the manufacturer's specification; too wide a gap demands more voltage, stressing the ignition coil, while too narrow a gap reduces spark intensity. Both scenarios trigger the misfire symptoms mentioned earlier and can even damage the catalytic converter if ignored.

Beyond the plug itself, the ignition coil supplies the high‑voltage pulse that jumps the gap. A weak coil produces a low‑energy spark, leading to incomplete combustion and a sluggish engine feel. The overall health of the ignition system therefore influences engine performance, emissions, and the driver’s experience. Regular visual checks, resistance testing, and torque verification are simple steps that prevent costly repairs down the road.

In the collection below you’ll find practical guides on how to spot a bad spark plug, when to replace them, and what a proper installation looks like. Whether you’re curious about the exact torque value, the ideal gap for your make, or the cost of a UK‑standard replacement, the articles are arranged to walk you through symptoms, diagnostics, and fixes. Dive in to get the facts you need to keep your vehicle’s ignition system running cleanly and efficiently.