Tag: test spark plugs

How to Test for Bad Spark Plugs: Simple Signs and Quick Checks Dec, 22 2025
Colby Dalby 0

How to Test for Bad Spark Plugs: Simple Signs and Quick Checks

Learn how to test for bad spark plugs with simple signs like misfires, hard starts, and rough idling. Step-by-step guide to inspecting, checking gaps, and replacing plugs yourself.

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