What spark plugs are better, mine is a ZM engine

1. General spark plug problems will lead to poor engine work, such as difficult starting, unstable idling, poor acceleration, urgent refueling and tempering, excessive exhaust gas, and increased fuel consumption. If the carbon deposition in the engine is serious, the valve will not be tightly closed, so that a cylinder will not work completely because there is no cylinder pressure, and even stick the valve to prevent it from returning. At this point, the valve and piston will interfere with the movement, which will eventually damage the engine.

It can be seen that the impact of carbon deposits on the engine is very large.

Second, the solution.

1.When unplugging the high-voltage wire joint, it should be gentle, and the spark plug insulator should not be shaken vigorously during operation, otherwise the spark plug sealing performance will be damaged.

2.The engine can be disassembled only after cooling, when the spark plug to be removed is loosened, blow the dirt around the spark plug one by one with a thin hose, and the dirt falls into the combustion chamber after the spark plug is unscrewed out.

3.The screw area, spark plug electrode and gasket must be kept clean, dry and free of oil stains, otherwise it will cause leakage, air leakage, spark weakening and other failures.

4.When installing, first use the sleeve to align the spark plug with the screw hole, gently screw it in by hand, screw it to about 1 2 of the full length of the thread, and then tighten it with an afterburner lever. If the hand feeling is not smooth when twisting, you should exit to check whether there are any entrained impurities in the screw mouth or thread, and you must not blindly tighten it, so as not to damage the screw hole and affect the cylinder head, especially the aluminum alloy cylinder head.

5.It should be tightened according to the required torque, too loose will cause air leakage, too tight will make the gasket lose elasticity, and it will also cause air leakage. Since the tapered spark plug does not use a gasket, it is particularly important to comply with the tightening torque.

6.When the carbon deposit and oil accumulation on the spark plug are not very serious, you can soak it in gasoline or kerosene and acetone solvent, and after the carbon deposit is softened, brush the carbon deposit on the electrode and the porcelain core and the cavity of the shell with a non-metallic brush, and dry it with compressed air. After cleaning, the spark plug is checked for clearance.

3. Preventive methods.

After completing the above, the installation test will be carried out, and the owner will be reminded to do regular maintenance to keep the oil and gas circuits clean; It is recommended to clean the air grid every 4000-8000km (according to the use of the vehicle and the actual situation) (replace it according to the actual situation), clean the throttle once, and clean the fire nozzle; Every 15,000-25,000km (according to the use of the vehicle and the actual situation), clean the intake pipe, throttle combustion chamber and related oil circuits, check the gasoline grid and replace it according to the situation; Avoid idling and stopping for a long time, avoid turning off the engine immediately after high-speed driving, avoid high-speed driving immediately after starting, and avoid low-speed gear shifting.

The Mazda engine spark plug model is NGK ZFR6F-11.

The function of the spark plug is to introduce the high-voltage electricity of the ignition coil into the combustion chamber and ignite the mixture with a spark to complete the combustion.

How to choose the right spark plug

1. The dimensions of the selected spark plug must be completely consistent with the original car, including the length of the spark plug, the size of the thread, the shape and length of the electrode, and so on. In this way, it is possible to ensure that the spark plugs are correctly installed in place, without interfering with the movement of valves, pistons, etc., and at the same time to ensure that the flame center of the combustion chamber of each cylinder is in the same position. In addition, the spark plug electrode material on the same engine must also be exactly the same, different electrode materials will affect the service life of the spark plug, which will lead to the imbalance of the ignition performance of each cylinder.

2. Choose the calorific value of the spark plug correctly. This point is not understood or ignored by many people, in fact, the calorific value of the spark plug is very important, it represents the balance of heat absorption and heat dissipation of the spark plug insulator skirt.

3. Reasonable selection of electrode materials for spark plugs. When we choose a spark plug, we will develop several kinds of spark plugs in platinum, iridium and nickel-copper alloys, which refer to the material of the spark plug electrode. Since spark plug ignition mainly relies on the electrode of the head, the material of the electrode will directly affect the performance of the spark plug.

Generally speaking, the better the material of the electrode, the better the performance of the spark plug, such as platinum and iridium spark plugs, the better the performance of the spark plug than the nickel-copper alloy spark plug, and the service life is longer.