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I Supported Toymods
Location:
Sydney
Registered:
December 2002
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Re: Cleaning Iridium Tipped Plugs
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Mon, 24 May 2004 09:16
 
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This is from NGK's site:
I would avoid using the wire brush as you can't regap iridiums
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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