![]() ![]() Step 1: Perform A Visual Inspectionīefore even touching your car’s engine, you should first do a visual inspection to determine if it doesn’t have any obvious external problems. Be sure to create a list and make sure that you follow your engine’s firing order so that it’ll continue to run smoothly. When that’s done, it will be possible to avoid mixing your cables and accidentally causing your vehicle’s engine to misfire. Disconnect the spark plug wires one at a time and then reconnect them following each test. These tools will be necessary to test your spark plug wires by yourself:Īlways test your ignition leads one by one. If ever you experience the problems above, then it would be an excellent idea to test your engine’s spark plug wires. It can be difficult to diagnose if your engine has bad spark plug wires because it shares similar symptoms with many other problematic components. Also, these knocking noises can cause serious damage to your engine so it would be a good idea for you to have your vehicle checked immediately. Due to that, you’ll hear knocking noises that can be rather annoying. Knocking Noisesīad spark plug wires cause delayed or incomplete combustions in your engine. Consequently, your vehicle will be forced to consume more gasoline, which is terrible news given today’s fuel prices. If your car’s bad spark plug wires fail, then your engine’s combustion process might negatively get affected. When a problem with your engine’s spark plug wires occurs, then your car’s problem indicator may light up. Nearly all modern vehicles are built with many sensors that report your engine’s conditions to your car’s ECU. Sadly though, this issue is an inevitable one that cannot be avoided if your car isn’t regularly inspected by a mechanic.įor those who do not know, an engine misfire is caused by internal combustion that is incomplete or erratic.īecause spark plugs are specifically made to create sparks at predetermined intervals, bad spark plug wires won’t be able to transmit the required spark, and therefore, cause your vehicle’s engine to misfire. Vehicle’s Engine Is MisfiringĪn engine misfire is the nightmare of any vehicle owner or driver. As such, you should inspect your spark plugs if your vehicle’s engine ever hard starts. The reason for it can range from everything from a faulty battery to bad spark plug wires. Hard starting is an issue that many engines suffer from. ![]() Leaks and cracks within the ignition head’s insulation shall cause a brief or complete loss of electrical transmission to your spark plug wires. Needless to say, the only way to determine if your spark plug wires are the reason behind your engine’s rough idling is via the assistance of your local qualified auto technician. Many types of mechanical issues can bring about rough idling. When that happens, your engine will hesitate, especially when it is being started up. Once your engine’s ignition degrades and develops small cracks, an irregular spark will be transferred to your spark plug wires. Now with any deterioration, it is certain that your engine will suffer from a noticeable reduction in power. You see, the spark plug of an engine must remain undeteriorated to guarantee a proper combustion cycle. Below are these symptoms explained in-depth: Diminished Engine PerformanceĪn engine could perform noticeably worse when its spark plug wires are in bad condition. Typically, bad spark plug wires exhibit 9 symptoms that’ll let you indicate that it’s time to visit a mechanic. Does changing spark plug wires improve performance?.How often do you have to change your spark plug wires?.Can a bad spark plug wire cause the car not to start?.Step 1: Make A Record Of Your Wire’s Locations.What Causes Spark Plug Wires to go Bad?.Step 5: Cross-Check Your Spark Plug’s Wire Connections.Step 4: Do An Ignition Lead Resistance Test. ![]()
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