1, avoid long-term unclean carbon deposition. When the spark plug is in use, the electrodes and the skirt insulators will have a normal carbon deposition. If these carbon deposits are not cleaned for a long time, they will accumulate more and more, eventually causing the electrodes to leak electricity and even fail to flash. Therefore, the carbon deposits should be removed regularly (usually 3,000 to 5,000 kilometers) and not cleaned when the spark plugs are not working.

2, avoid long-term use. Spark plug models are numerous, but they all have their own economic life. If they are used after exceeding the economic life, they will not be conducive to the engine's dynamic and economical performance. Studies have shown that, with the extension of the spark plug's life, the center electrode end face will change to the arc shape, and the side electrode will change to the concave arc shape. This shape will increase the electrode gap and cause discharge (ie spark). Difficulties affect the normal operation of the engine.

3, bogey free descaling. Some people do not pay attention to the cleanliness of the spark plug when spraying silver powder on the engine or performing other maintenance, causing the spark plug to leak due to the appearance of dirt. When cleaning the exterior, do not plan to use the sandpaper and metal sheets to remove dirt easily and quickly. Instead, dip the spark plug into the gasoline and remove it with a brush to ensure that the ceramic body of the spark plug is not damaged.

4, bogey fire. In reality, some people often use the method of burning to remove carbon deposits and oil stains on the electrodes and skirts of spark plugs. This seemingly effective method is actually very harmful. Because of the fire, the temperature is difficult to control. It is easy to burn the skirt insulator, causing spark plug leakage, and the small cracks generated after the fire is often not easy to find, causing great trouble to troubleshoot. One of the correct methods for coke deposits and oil stains on spark plugs is to use special equipment for cleaning, which will have very good results. Second, the solution will be clean. Soak spark plugs in alcohol or gasoline for a certain period of time. When the coke is softened, then use wool. Brush dry and dry.

5, avoid cold and heat regardless. In addition to different shapes and dimensions, spark plugs are also classified into cold type, medium type, and hot type. Generally, high-compression ratio, high-speed engine should use cold-type spark plug; low-compression ratio, low-speed engine should use hot-type spark plug, in between the medium-sized spark plug. In addition, spark plug selection for new or overhauled engines and older engines may vary based on actual conditions. For example, when the engine is relatively new, the use of spark plugs should tend to be hot; when the principal's old engine is used for a period of time, the spark plugs are prone to excessive carbon deposition and oil damage, and the spark plugs used should be medium or cold in order to improve the spark plugs. Anti-oil ability.

6, avoid misdiagnosis misdiagnosis. When replacing a new spark plug or suspecting that it is faulty and requires inspection, after the normal operation of the locomotive for a period of time, stop the spark and remove the spark plug to observe the color characteristics of the electrode. There may be the following situations: First, the center electrode is red-brown, the side electrode and All around is blue-gray, suitable for spark plug selection; second, there is ablation or melting between electrodes, the skirt and insulator are burning state, indicating that the spark plug type is overheated; third, there are black stripes between the electrodes and the insulator skirt. Explain that the spark plug has leaked. Improper spark plug selection or air leakage should be re-select the appropriate spark plug.

7, avoid installation too tight. The spark plug must meet the specified torque when it is installed. When using a special tool (ie, spark plug bushing), it will not generally exceed, but if excessive force, excessive force or installation with a wrench, damages the spark plug porcelain core or causes the screw to slide, and the expansion groove breaks to cause a spark plug. Scrapped; but not too loose, otherwise it will cause the engine to work abnormally.

Lead free plumbing for USA market: ball valve, drain valve, check valve, meter coupling &flange etc.
Material: free-lead bronze or brass

Size: 5/8'', 3/4''X2, 3/4''X3'', 1'', 11/2''(flange), 2''(flange)

These products all contain less than0.25% lead by weighted average of the
Wetted surface areas. We recommend using these valves or coupling for potable water applications.

NSF Lead Free Plumbing

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