Hi - I pulled one of the plugs from my '99 A4 (B5) 1.8T (AJL) - and noticed its very white at the tip. it didn't seem right to me, so a bit of research has lead me to believe it could be running too hot or too lean. The car is not showing any fault codes and seems to be running ok. Is this normal, or do I have an issue to be resolved and if so where should I start?
see pic attached
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