Just after peoples thoughts.
Changed my spark plugs today, bought the NGK Iridium ones from Awesome GTI.
Straight forward swap, noticed on the 1st pack I pulled had wierd rust type stuff on the end, pulled the spark plug out & that was the same.
Ran out of time today but will pull the plug whilst the engine is running tomorrow.
Wondered if anyone has experienced this & it's just the pack.
The clean spark plug is what the other three looked like.
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