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Spark plug testing safety tips from IAME

Spark plug testing kits are generally safe to use when following proper procedures and precautions.

However, there are a few potential dangers associated with their use and not all spark plug testers take all safety aspects into consideration.

  1. Electrical Shock: Since spark plug testing kits involve handling electrical components and wires, there is a risk of electrical shock if not used correctly. Make sure to disconnect the ignition system and follow safety guidelines provided with the testing kit.
  2. Burns: Spark plugs and their surrounding components can become very hot during operation. There is a risk of burns if you touch these parts while they are still hot. Allow the engine to cool down before attempting to test or replace the spark plugs.

    IAME National President Jeffrey Richards. Image: supplied
  3. Fire Hazard: Working with petrol engines always carries a risk of fire. Take precautions to prevent petrol spills and ensure proper ventilation in the area where you are working. Avoid using the testing kit near open flames or sources of ignition. In later vehicles as a safety requirement if the engine is required to be turned over there is a necessary requirement to disable the electric fuel pump from working so that fuel is not sprayed into the cylinders especially if a spark plug or plugs have been removed as the excessive fuel will be pumped out via the spark plug hole which could lead to a fire hazard.
  4. Mechanical Injury: Some spark plug testing kits may require you to access tight or awkward spaces within the engine compartment. Exercise caution to avoid injuries such as cuts, bruises, or pinches while maneuvering around the engine.

Plug ‘n’ play

The Dechmont Spark Plug Testing kit (SPTK) over comes all of the above concerns as listed on their product as the only fool proof & safe way in the world to test a spark plug in any petrol engine (car, motorcycle, lawn mower, chainsaw, outboard etc.) using their own power. Simply connect and turn your engine over to test your spark plug or plugs.

Here are some safety features to look for in a spark plug testing kit:

  1. Insulated Probes: Look for a kit with probes that are insulated to prevent electrical shock when handling them.
  2. Protective Covers: Some kits come with protective covers for the spark plug terminals to prevent accidental contact while the engine is running.
  3. Safety Instructions: Ensure that the kit includes clear and detailed safety instructions for proper use, including how to safely disconnect the ignition system and handle hot engine components.
  4. Quality Construction: Choose a kit made from durable materials that can withstand the conditions of automotive use without compromising safety.
Dechmont Spark Plug Tester kits. Images: IAME

The Dechmont Spark Plug Testing kit

(SPTK) provides all the above key factors. The difference is that it has way more extra built in safety aspect where the spark is contained in a see through dome container, making the testing of the spark plug more convenient, where the operator has no chance of being zap or injured by a high voltage spark, the added designed bonus, when using this Tester in a confined space, there is a nil chance of the spark igniting any fuel vapors that maybe present within the confined space.

Therefore, an external fire hazard would be non-existent when using this designed type of Spark Plug Tester.

You can purchase spark plug testing kits from a variety of sources, including:

  1. Automotive Parts Stores: Many auto parts stores carry spark plug testing kits, and they often offer a range of options from different brands.
  2. Online Retailers: Online marketplaces like eBay, and websites often have a wide variety of spark plug testing kits available for purchase.
  3. Manufacturer Websites: Some manufacturers of automotive diagnostic tools and equipment sell their products directly to consumers through their websites.
    Visiting the website of a reputable manufacturer can be a good way to find a safe and reliable spark plug testing kit.

Like any product, be sure to read product descriptions and customer reviews to ensure you’re getting a safe and reliable kit.

When shopping for a spark plug testing kits, prioritise all safety features to minimise the risks associated with testing spark plugs.

With the range of safety features mentioned in this article. It would be extremely advisable, and strongly consider to always follow the manufacturer’s instructions carefully and exercise caution when working with automotive electrical systems.   

Plugged in

The Dechmont Spark Plug Tester is a device used to test the functionality of spark plugs, which are crucial components in internal combustion engines. Here’s how it positively functions:

  1. Diagnostic Tool: It helps diagnose potential issues with spark plugs. By connecting the spark plug to the tester, mechanics or users can quickly determine if the plug is in good working condition or if it needs replacement.
  2. Timesaving: Instead of removing each spark plug from the engine to visually inspect it, the tester allows for quick testing without disassembly. This saves time, especially in cases where multiple spark plugs need to be checked. The tester capabilities are useable when individual high-tension leads are used or accessible.
  3. Cost-Effective: By identifying faulty spark plugs early, the tester can prevent potential damage to the engine caused by misfires or incomplete combustion. This can save money on costly repairs that might arise from prolonged use of faulty spark plugs.
  4. User-Friendly: The tester typically provides clear indications of the spark plug’s condition, making it easy for both professionals and amateurs to use. It doesn’t require extensive technical knowledge to operate effectively.
  5. Preventive Maintenance: Regularly testing spark plugs can be part of a preventive maintenance routine, ensuring that the engine runs smoothly and efficiently. This proactive approach can extend the lifespan of the engine and improve overall performance.
  6. Versatility: Some spark plug testers may be compatible with a variety of spark plug types and sizes, enhancing their usefulness across different engines and vehicles. sOne of the features in (SPKT) and is available for small engines with a pull start mechanism (using a rope) the operator can install the decompression fitting into the spark plug hole. This allows the engine to be turned over very easily while further testing the function of the spark plug in question.

Trust the process

The safety benefits of the Dechmont Spark Plug Tester primarily revolve around its ability to prevent potential hazards associated with malfunctioning spark plugs and the testing process itself:

  1. Preventing Engine Damage: Faulty spark plugs can lead to misfires, rough engine performance, and even engine damage over time. By quickly identifying and replacing faulty spark plugs, the tester helps prevent these issues, ensuring the engine operates safely and efficiently.
  2. Reducing Fire Risks: Malfunctioning spark plugs can sometimes cause sparks or electrical arcing, which may pose a fire risk, especially in environments with flammable materials. By detecting faulty spark plugs early, the tester helps reduce the likelihood of such incidents.
  3. Avoiding Electrical Shocks: Working on automotive electrical systems can potentially expose individuals to electrical shocks if not done properly. The spark plug tester provides a safe and controlled environment for testing spark plugs, reducing the risk of accidental shocks during the diagnostic process.
  4. Preventing Carbon Monoxide Exposure: Incomplete combustion due to faulty spark plugs can lead to increased emissions of harmful gases, including carbon monoxide.
    By ensuring proper combustion through timely spark plug testing and replacement, the tester contributes to reducing harmful emissions and minimising the risk of carbon monoxide exposure for both users and bystanders.
  5. Minimising Engine Stall Risks: A malfunctioning spark plug can cause engine stalling, especially at critical moments such as during acceleration or while driving.
    By identifying and replacing faulty spark plugs promptly, the tester helps minimise the risk of unexpected engine stalls, which could lead to accidents or dangerous situations on the road.
  6. Promoting Proper Engine Performance: Ensuring that spark plugs are in good condition and properly functioning is essential for maintaining optimal engine performance and responsiveness.
    By facilitating regular spark plug testing and maintenance, the tester contributes to safer driving conditions by promoting consistent and reliable engine operation.
Image A: Captive Dome. Image: IAME

Image A shows the dome shape of the safety areas contained in the Dechmont Spark Plug Tester and as the spark jumps the gap it is being contained in captive surrounds not out to atmosphere.

Image B shows the combustion/fire that has happened outside of the engine on top of the tappet cover area where a person had removed all the spark plugs and rested them against the engine cover so as when the engine is turned over the person can see in turn if all the spark plugs are firing.

Image B: Combustion fire on top of the engine. Image: IAME
  1. As the engine is turned over to perform the spark plug test, the petrol going into the engine is forced up through the spark plug hole and because you have spark happening around the spark plug hole area there is a instant fire happening, one is a blue flame the other is a yellow/orange to a white flame. This could lead to personal injury or a fire badly damaging the vehicle.
  2. The Dechmont Spark Plug Tester (SPKT) is designed and works to prevent this dangerous event from happening as one of the safety features is that the SPTK does not use alligator clips to fix the earth wire or the spark plug does not have to rest against the metal part of the engine to obtain earthing.
  3. In the SPKT the earth wire is fixed to the metal base of the spark plug, as the spark plug is screwed into the captive dome apparatus. The only spark that is going to happen and happen every time, because the earth wire is fixed and contained, is in the safety dome. Eliminating any dangerous issues as per in Image B.

In summary, the safety benefits of the Dechmont Spark Plug Tester (SPKT) that have been highlighted in this article promotes safe operation of testing spark plugs on vehicle engine, large and small including all types of petrol engines in a range of machinery.

To purchase the Dechmont Spark Plug Tester (SPTK) and to obtain further information click here

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