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Spark plugs - washered or not?
Hi all,
2011 128i N52K.
I just replaced the spark plugs and ignition coils - I was getting intermittent misfire on 1 and 3. Car runs great now, but I am left wondering if I have made a mistake.
The plugs I bought came from a local parts shop, supposedly correct for this engine. They are:
NGK LZTR5AGP - 018-4783-2
They look very similar to the ones I removed, with one exception: they don't have crush washers, instead they have a tapered shoulder.
Are these the correct plugs? Should I replace them with ones with washers?
Thank you!
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