Uploaded May 2024 | Updated September 2026, 15 hours ago

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This video examines the signs of fouled spark plugs, looks at circumstances that can lead to this failure, and walks you through the next steps to take.



Timecode:
00:00:00 - Short intro
00:00:27 - Symptoms Of A Fouled Spark Plug
00:00:29 - Difficulty Starting Engine
00:00:44 - Misfiring Engine
00:01:02 - Decreased Response When Accelerating
00:01:23 - Poor Fuel Economy
00:01:44 - Rough Idle
00:02:00 - Strange Exhaust Smell
00:02:18 - Causes of Fouled Spark Plugs
00:02:20 - Oil Contamination
00:02:37 - Overheating Engine
00:02:59 - Carbon Buildup
00:03:22 - Wrong Plug Gap
00:03:50 - How to Fix