Replacing Spark Plugs

What happens here

The creator removes the old spark plugs, noting that they are crusty due to water accumulation in the flathead engine's spark plug wells. He uses a wet/dry vacuum to clear out any debris or moisture from the spark plug wells. He then installs the new, pre-gapped spark plugs. One of the old spark plugs was difficult to remove, requiring lubrication, and its porcelain part broke off. He highlights the difference between the old, crusty plug and the new one.

Goal: Replace the old spark plugs with new ones.