Frequently Asked Questions
Q: Can old spark plugs be cleaned
A: Yes, you can clean spark plugs. However, it is good to remember that
spark plugs are a wearable item, so it's important to make sure you check to
see if it's worth cleaning before you go through the following steps.
- If the firing end is wet, make sure you clean the spark plug with
a quick drying cleaner. (Examples: contact cleaner or brake cleaner).
- Sand blast the spark plug using low air pressure
and use a dry compound.
- Completely blow all the sand from the spark plug.
- Using a wire brush clean the threads and re-gap.
NOTE: Insufficient cleaning of the spark plug may lead to spark plug failure
in a very short period of time. Clean the spark plug thoroughly to avoid problems
later. Remember, if a spark plug is fouling it's usually a result of engine
side factors or incorrect heat range selection.
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