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Misfire
When the engine failures uneven idling, does not develop sufficient power, increased consumption of gasoline. Interruptions usually explained malfunction elektrobenzonasosa injectors or spark plugs of one of the cylinders, the suction air in one of the cylinders. We need to find the problem and possibly fix it. | | 1. Start the engine and let it run at idle. Go to the exhaust pipe and listen to the sound of the exhaust. You can bring a hand to the outlet of the exhaust pipe - so shortages are felt better. The sound should be smooth, "soft", one tone. Cotton from the exhaust pipe at regular intervals indicate that one cylinder is not working because of the failure of the spark, no spark on her failure nozzle, a strong air leaks on one cylinder, or a significant reduction in compression in it. Claps at irregular intervals occur due to contamination of spray nozzles, excessive wear or contamination of the spark plugs. If popping occurs at irregular intervals, you can try on their own to replace the entire set of candles, regardless of mileage and appearance, but better to do it after the call to service center for diagnosis and repair of engine management systems. | 2. If the regular claps, stop the engine and open the hood. Check the condition of the wires of the ignition system. High voltage wires must not be damaged, and their tips - oxidized. If the wires are damaged, replace them. |
HELPFUL ADVICE The most simple and yet efficient way of testing high voltage cables - checking in the dark. Put the car in the dark, start the engine and open the hood. Examine the high-voltage wires. If broken wire insulation, you will see the characteristic sparkling blue-violet ("northern lights"). In this case, high-voltage wires should definitely be replaced. |
A WARNING When removing the tip of high-voltage wires never pull the cord. Grasp the tip and immediately after turning it from side to side, pull to remove. |
4. Inspect the spark and compare their appearance with the photo below. Electrode gap should be 1.0-1.1 mm. |
If the candle black and wet, it can be discarded. 5. If all the candles look serviceable, set them in place and connect the high-voltage wires. Operating procedure of cylinders 1-3-4-2 numbering starts from the cylinders of the engine crankshaft pulley. |
| 6. Take a spare candle. Either way fix it on the engine. |
A WARNING Do not fix the candle on the oil filler neck, dipstick, fuel hoses. |
Reliable contacting the housing or threaded portion of the spark with "mass" is optional, but desirable. Connect the high-voltage wire from the 1st cylinder to spare candle. Start up the engine. If the engine is not increased faults, replace the spark plug in the 1st cylinder known good. Put on high-voltage wire and start up the engine. If outages have increased consistently repeat the procedure p. 6 all cylinders to identify the faulty candle. If as a result of the measures taken the engine interruption persists, check the compression of each cylinder (see. "Check cylinder compression"). Normal compression - more than 1.0 MPa (10 kgf / cm 2), the difference of more than 0.1 MPa (1 kg / cm 2) in one cylinder indicates the need to repair the engine.
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