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Release time:
2016/3/25 15:29:53 |
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The role of the spark plug ignition coil high voltage pulse generated by the introduction of the combustion chamber, spark ignited by the electrode to produce a mixed gas, complete combustion.
Automotive spark plug type designation
Domestic spark plug model consists of three numbers or letters. In front of the number indicates the thread diameter, such as the number 1 indicates the thread diameter is 10mm, the middle letter indicates the length of the spark plug is screwed into the cylinder portion; the last digit represents the spark plug heat type: 1-3 for the hot type, to 5,6 medium-sized, seven more than the cold type. Spark plug "gap" is the main work of the technical indicators, the gap is too large, high voltage ignition coil and distributor of produce is difficult to skip, resulting in difficult to start the engine; if the gap is too small, will result in weak spark, while easy to leakage occur.
Check the spark plug replacement car
1, the spark plug disassembly: high-voltage sub-line will in turn remove the spark plug and put a mark in the original position to avoid installation dislocation. Note that prior removal of dust and debris in the plug hole at the disassembly to prevent debris falling into the cylinder. Stuck spark plug when removing spark plug sleeve, the sleeve is rotated to remove it, and in turn line up.
2, clean the spark plug: spark plugs there are oil or soot should be cleaned in time, but do not use a flame grill. Such as ceramic core is damaged, broken, you should replace it.
3. Check the spark plug: The spark plug electrode normal color is off-white, black electrode burn along with coke, then there is a fault. You can check the spark plug and the cylinder is turned on, the high voltage in contact with a central spark plug terminal, then turn the ignition switch to observe the high-voltage jump position. The electrical position jump in the spark plug gap, then the role of the spark plug is good, otherwise, it will take new ones.
4, adjust the spark plug electrode gap: various models of spark plug gap were different, the general should be between 0.7-0.9, check the gap size, free spark plug gauge or a thin metal sheet is. The gap is too large, the available screwdriver handle to tap external electrodes, so that the normal gap; the gap is too small, you can use a screwdriver or a metal sheet is inserted electrodes pulled outward.
5, replace the spark plug: the case of the spark plug consumable parts, ships with 20000-30000 kilometers should be replaced. Replace the spark plug is not a sign of flashover or discharge electrode formed in part by a circular ablation. In addition, as is often found in the use spark plugs soot, fire off, usually because the spark plug too cold, to be replaced with hot type spark plug; if hot cylinder ignition phenomenon or issue impact sound, you need to choose cold type spark plug. |
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