HOW TO CHANGE SPARK PLUGS? BIZOL CERAMIC+ L55 SPRAY
Avoidable damage to spark plugs or glow plugs
Prevent seizing, rusting or cold welding
Seized glow plugs or spark plugs can be a common occurrence in vehicles with a long service life, and professional mechanics and car often have difficulties when removing them. The cause often lies in the nature of some materials which tend to seize or weld under certain operating conditions. But also rusting or burning or hardened carbonised combustion residues often lead to seizure of the components. Especially in the glow plugs, damage is not uncommon during repair, and they may even break or tear off. But how can you prevent component damage and save time and money?
Different designs and applications
Functioning spark and glow plugs are fundamental for the operation of the two most widespread internal combustion engines: gasoline and diesel. In gasoline-powered engines, spark plugs generate sparks via electrical impulses that ignite the gas-air mixture.
In diesel-powered engines, ignition of the fuel mixture occurs when a certain pressure and temperature are reached in the cylinder. Depending on the design, ignition assistance takes place:
- at low outside temperatures
- during the warm-up phase
- after starting
- during engine operation
Signs of defective glow plugs
Defective glow plugs can make it difficult to start the engine and promote rough idling. Sometimes, the might delay the extinguishing of the pilot light in the cockpit.
Signs of defective spark plugs
Like glow plugs, typical signs of defective spark plugs include jerking of the engine, loss of power, increased pollutant emissions, or the illumination of the engine control light in the cockpit. But other causes can also cause misfiring. High-voltage systems, especially ignition distributors and breakers in older vehicles, are often susceptible to damage.
Correct installation and removal saves time and money
As a rule, the recommendation is to leave the glow plug replacement work to a specialist workshop. This is because, despite the use of professional tools, glow plugs might break off or snap if special sprays such as BIZOL Ceramic+ L55 Spray weren´t used during installation. In the worst case, threaded holes in the cylinder head can be damaged to such an extent that they need reparation.
In practice and in many BIZOL partner workshops, however, preventive treatment with BIZOL Ceramic+ L55 Spray has proven its worth. The fine, long-lasting surface coating prevents sticking due to rusting, burning or cold welding on the endangered contact surfaces. This not only saves money for costly repair work on the cylinder head, but also a lot of time when removing the wearing parts.
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Prof. Dr. Boris Zhmud, Head of R&D, BIZOL Germany
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