Hi. I ventured to change the spark plugs on my '99
323iS just recently. The old spark plugs look very "dirty". I am handy enough to do simple jobs like this but I don't have the experience to know what old spark plugs should look like.Here are some pictures:
Is the engine running rich? Or were the spark plugs left there too long? How can I test to see if the engine is running rich? If I pulled out one of the new spark plugs to see it's condition, how many miles should I drive before anything will build up on the spark plug?
Thanks.
-Moe