A worn or excessive gap will cause an ignition coil to work overtime, using more voltage to bridge the gap and create spark inside of the cylinder. This increase in voltage stresses the internals of not only the ignition coil but, in certain circumstances, the driver of the ECU.
When the driver in the ECU fails the coil will no longer create spark, leaving a dead cylinder. It is important to remember that many spark plugs come pre-gapped according to the applications that correspond to each spark plug part number. In the event that there is a coil failure due to an excessive gap, the spark plug and ignition coil should be replaced. It is also recommended that the ECU driver is verified for proper operation.
Moisture is another cause of ignition coil damage, coming from the most likely and unlikely of places. The most likely being an oil leak from the valve cover gasket. On many COP-style engines the spark plug and ignition coil are mounted into a tube that is a part of the valve cover. Overtime the seal between the valve cover and that spark plug tube can fail, causing oil to leak in and fill up around the spark plug and ignition coil. This in turn can lead to spark plug and ignition coil failure.
Be sure to fix the root cause of the oil leak, so this problem does not reoccur with the new ignition parts installed. Water intrusion is an unlikely, and therefore, overlooked cause of ignition coil damage. This in turn can lead to spark plug and ignition coil failure. Be sure to fix the root cause of the oil leak, so this problem does not reoccur with the new ignition parts installed.
Water intrusion is an unlikely, and therefore, overlooked cause of ignition coil damage. To solve this problem, some ignition coil manufacturers pre-apply or include a marine-grade di-electric grease with their product. This gives a better seal between the coil-on-plug boot and the spark plug terminal nut, preventing moisture from interfering with voltage transfer and spark generation.
Taking steps to check for oil leaks, moisture, and spark plug issues will prevent serious engine damage and other ignition-related headaches. There are thousands of reasons for misfire codes.
For more information or questions about ignition coils, you can reach out to the NGK Technical Support line by calling or visit them on the web at www. Digital Edition. Contact Us. Shop Owner. Special Topics Webinars Video Podcasts. Magazine Current Issue Past Issues. You can drive the car until it breaks down completely and it will. While doing so you will , as pointed out by other answers, run the risk of damaging the converter but you also run the risk of fire.
If the coil is faulty very bad things can happen. Usually a faulty ignition coil will produce a few symptoms that alert the driver of a potential issue. Engine misfires, rough idle, and loss of power. One of the most common symptoms associated with a faulty ignition coil is engine performance issues. Check Engine Light comes on. Car is not starting. Connect your multimeter to the positive terminal or pin of your coil , and to the high output terminal that goes to the spark plug.
Most ignition coils should have a secondary resistance falling somewhere between 6, to 10, ohms;however, refer to manufacturer specifications for the correct range. A shorted or open fuel injector solenoid, or a shorted or open coil will usually set a code , but a dirty or weak fuel injector or a weak coil probably won't set a code.
Bad spark plug wires are a common cause of misfire codes. So you can replace one ignition coil at a time. Use only BMW or Bremi brand. In most cases you end up replacing them all in a short period of time. You can replace one coil at a time or all at the same time. I would however recommend having all spark plugs replaced with the coils so you do not have to remove coils twice.
A high performance ignition coil helps engine performance four important ways. First, the higher voltage allows for a larger spark plug gap, which results in a more robust initial flame kernal at the start of combustion. The result is a real-world engine torque increase. When to replace spark plugs If you check your owner's manual, you'll probably find that your automaker recommends you replace your spark plugs roughly every 30, miles. That's fine if you're using stock spark plugs.
However, the actual timing of replacement will vary depending on other factors. But in general, my advice is, if you have more than about 75k miles on the car and a coil pack goes bad, replace them all. Cut off Power from the Car's Battery. Determine the Location of the Ignition Coils. Label the Ignition Cables. Disconnect the Ignition Cables. Remove the Ignition Coil.
0コメント