Quote:
Originally Posted by nynor
$550 for spark plugs?! WTF!
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It's a $300 job for a back woods shop.
Metal plugs are at $100.
The shaft is ceramic. Removing the plug requires the ceramic to withstand loosening the plug which enters the combustion chamber well below the bore threads. I am not sure if it's the threads or the plug extension that collects combustion cooties making it difficult to extract.
Some shops burn Seafoam in the gas for weeks before the removal attempt is made.