NGK Spark Plug CR7E 4578

Product Information

Electrode configurations - Fine-wire center electrodes provide better sparking and enhanced ignitability. Fine-wire ground electrodes further improve the ignitability of the plug. If you’re going to be doing any sort of work on the bike, treat yourself to a decent set of tools. Most of mine are from the Halfords Advanced range (formerly called Professional). Insulator configurations - Special configurations are used for the insulator noses to improve throttle response. We’re one of the UK’s premier car parts suppliers. That means we have a huge selection of spark plugs online, with options available for various manufacturers and models. Every part, including spark plugs, is also available at 600+ Halfords stores and autocentres throughout the UK. How spark plugs work The heat range must be carefully selected for proper spark plug thermal performance. If the heat range is not optimal, then serious trouble can be the result. The optimal firing end temperature is approximately 500°C (932°F) to 800°C (1472°F). The two most common causes of spark plug problems are carbon fouling (< 450°C) and overheating (> 800°C).

To combat the ‘cold fouling’ effect that can occur in some engines using unleaded fuels specially arranged ground electrodes are sometimes used. These can force the spark to discharge across the insulator and thus burn away any built up carbon that could cause poor starting or misfires. It is not uncommon to find two; three or four ground electrode arrangements in new vehicles. The use of precious metals on the tips of the spark When to replace your spark plugs depends on a few factors, including the type of spark plugs your vehicle uses, spark plug wear, the conditions you drive in, and your manufacturer’s recommendations. Most modern spark plugs are designed to last for a significant mileage range, typically between 30,000 and 50,000 miles. Glow plugs If an air-fuel ratio meter or gas analyzer is not available, it will be necessary to visually inspect the spark plugs frequently during the tuning process to determine the proper air-fuel mixture. The image of the spark plugs above shows four common conditions that you’ll find your spark plugs in. From left to right the plugs are Normal, Rich, Lean and Very Lean. Full descriptions below. Conversely, if the engine is to be operated at low speeds or at low temperatures for long periods, a hotter heat range might be needed to prevent fouling.CANADIAN TIRE® and the CANADIAN TIRE Triangle Design are registered trade-marks of Canadian Tire Corporation, Limited. A misfire occurs when the spark travels the path of least resistance instead of jumping across the gap. Misfires can be caused by the following:

Our engineering departments work very closely with the engine and vehicle manufacturers to produce the ideal spark plug type for each application. Any change in production is expensive for a manufacturer and therefore new spark plug types are only produced where necessary. NGK employ the very latest production technology to ensure that every aspect is catered for – performance; economy and value. The NGK Standard Spark Plug is constructed from durable material that is corrosion and abrasion resistant. The spark plug insulators are made of 99 percent pure alumina silicate, allowing for longer insulator noses for reduced fouling. This spark plug features a triple gasket sealing process that eliminates fuel leakage. It also includes a solid copper core that provides superior heat dissipation and conductivity. The spark plug's resistor is manufactured from a mixture of glass and carbon, which is fired to ensure superior performance and durability. It has corrugated ribs that prevent flashover and cold rolled threads to inhibit damage to the cylinder head.

Suzuki Spark Plug Fitment Chart

Copper is generally seen as being the best metal to use in terms of conductivity but iridium plugs are seen as premium as they last longer than standard plugs and can be built with smaller tolerances. Iridium spark plugs also have lower voltage requirements, meaning they perform better when starting and idling and some manufacturers also claim they offer a better throttle response. Online prices and sale effective dates may differ from those in-store and may vary by region. Dealers may sell for less. Increases in the size and the requirement to improve the cooling of the inlet and exhaust valves have meant that the space available for the spark plug is severely restricted on some Electrode materials - Many use precious metals such as platinum or gold/palladium for greater durability and lower voltage requirements. Fouling can occur more easily if the air-fuel mixture is not adjusted to compensate for the altitude. Higher altitude = less air = less fuel.