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1998 C230 K
47 Posts
Discussion Starter · #1 ·

I have a slight mis-fire at about 3000 rpm.
By the was i still have a power loss problem since i replaced my MAS. I checked the plugs and they seem fine. I wonder if the two coils sitting on the plugs are not faulty. Ant ideas how to check if they are faulty . Also are they expensive?
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