![]() Remember when you are working on your engine, it's best to determine WHY something has failed before purchasing parts to avoid costly repeat failures. By using the above mathematical formula we can determine that the bad spark plug ignition cable caused between 15,000,000 to 20,000,000 volts to be generated by the ignition coil! That's 5,000,000 ohms! We know that a typical small engine ignition coil uses between 3 to 5 amps. ![]() In our example below the bad spark plug ignition cable has a resistance reading of 5 mega ohms. Remember that Voltage = Amps x Resistance If the sensor is dirty or failed, it will cause the engine to run too rich or too lean. The MAF sensor calculates the airflow into the engine, and then calculating the air-fuel mixture that should be added. This excessive voltage creates a high amount of heat which consequently melts the coil's wire insulation. It sounds like a bad wire or pour wire contact. Faulty MAF Sensor A faulty MAF sensor is the most common cause of an engine that is running rich.This high resistance causes a very high amount of voltage to be generated from your ignition coil's secondary winding. In worst case scenario, if the spark plugs are in really bad condition, the engine will not start. The leading cause of premature failure of an ignition coil is due to a worn or bad spark plug ignition cable.Ī bad spark plug ignition cable will have a much higher than normal resistance. The most common signs of bad spark plugs in Jeep Wrangler are poor acceleration or hesitation, rough idle, engine misfires, poor fuel economy, check engine light illuminates, engine knocking noise, and sometimes hard starting. Sparkplugs have a lot of pressure (voltage) to arc with, but the size of the spark kernal is determined by the size of the conductor and the amount of flow (current) it can deliver. Did you just replace your burned out ignition coil to have your new one burn out too? Here is why! When choosing a plug, think of the conductors as being like a pipe: the bigger the pipe the more flow.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |