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Other frequently occurring sign – C, indicating the copper (Cupper), or rather – the central copper electrode, and two letters denote the CC for Champion copper core as a central and a ground electrode. The most important numerical characteristics of spark plugs heat range is a number, the thread diameter and thread length. It is not necessary to say that the candle is obliged to a tee behoove these three qualities of your car engine. Even simple error with a length of thread can lead to costly dire consequences. If it is shorter than your full-time – on ‘useless’ thread turns in the head very quickly accumulate the products of combustion and to further tract of normal candles need to punch a special tap.

Even more frightening consequences of screwing too long candles. Then the products of combustion are already settle on its surface and it will be seized by a kind of lock. The smaller the result of such negligence – dismantling the engine. You should not also try to remember coding system and heat rating number of threads from different manufacturers. Any reputable seller and buyers of parts has to table ready interchangeability. Spark plugs, or rather their external appearance are unsurpassed indicator of the engine.

Not so much the candle itself is ready to you ‘tell’ about possible mistakes in her choice, however, and talk about hidden processes developing in the engine long before this, as they declare themselves as black smoke, detonation or unstable. Habitually operating a candle spravno engine has a clean electrodes color ceramic insulator ranging from clear to gray to brown. The phenomenon of black oily soot said that a candle or cold for the engine, or in the investigation starts to show a deterioration of piston rings into the camera enters the number of excess oil, or carburetor adjusted incorrectly and working pereobogaschena mishmash. Overheated candle has a white ceramic. In case the same by removing the spark plug, you will find a fused or bombarded with molten aluminum electrodes – a sign already commenced critical issues (surface ignition, detonation). And the last thing to mention – the possible extension of the life of spark gap adjustment. On Suomi fact, as far as electrical and thermal wear of the electrodes, it increases and, using special probes can measure the gap and push the right side of the electrode podgibaniem usual. You can recognize such effects only correct if you were 1 on 1 with nezavodyaschimsya engine in the country outside the city or the decline of financial stocks has eaten all your family and the cost for the next kit in it are not provided. In a simple situation, the same think that subtle electrodes are heated Speshnev and threatened detonation. A full repairing the engine is much more costly than a dozen candles. The most recent – change them as a complete set (4, 6, 8 pieces, depending on engine) – not necessary to save on matches.