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When to change spark plugs
Hi all,
So I thought in a previous thread I wrote about (4K average rpm) that the smell I had was with the engine not being properly heated up or something. However it is due to a bad coil (found out this morning) when my car went into engine service soon limp mode with the engine rattling (this is a symptom of a bad coil this happened to me a year ago)
I am changing all of my coils (car is at 30k miles) at a local trusted guy . I had one coil go bad about a year ago and bmw replaced the one spark plug as well coil for that cylinder.
When is the recommended interval to replace spark plugs? The local guy adviced against it because only the coils were recalled.
Thanks.
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