Not replacing the plugs could leave the root cause of the possible coil failure in the engineThis video is sponsored by NGK and NTKUnderhood Service:https:// Should I replace all or just on of my ignition coils? Only one is out. Thus, changing coil packs with spark plugs is a must, not mandatory. . Oct 4, 2018 · Measure between the ignition feed wire and ground with ignition switch on 3 The voltage reading here should be the same as the voltage on the motorcycle battery (12volts). Aug 6, 2025 · Should You Replace All Ignition Coils? Unless you’re experiencing multiple failures or your coils are old and due for replacement, there’s no need to change them all at once. Paycheck to paycheck right now Archived post. From what I’ve learned, coil packs are generally considered reliable and can last the lifetime of a vehicle. I already had 180k miles on these coils and wanted to see if it made any difference. Jun 17, 2025 · Ignition coils help create the spark that fires up your engine. They are pretty reliable and should last he life of the vehicle, but occasionally one will go bad.

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