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Old 10-09-2002, 07:55 PM
Louis Louis is offline
Registered User
Join Date: Aug 2002
Location: southern California
Posts: 12
bosch platinum+4 plugs 420 sel

I recently bought a 1986 420 sel, it has a rough idle and is very sluggish from a dead stop, once up to normal speed it runs great. I noticed it has platinum4 spark plugs, are theese good or is there better plugs out there. Any help would be most useful as this is our first MB. Thanks Louis
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