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Old 05-30-2000, 08:45 AM
LarryBible
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MikeTangas,

I doubt that the plugs would be the cause of your newly developed rough idle. The platinum plugs will contribute to a rough idle, but it would probably be upon their initial installation. Even though the thin spark is the down side to platinum plugs, the upside is that they last a long time. Let us know if changing them cures your rough idle. I suspect that there is something else adding to the idle problem. Changing the plugs will help because they're platinum, but if the idle problem came later, I'll bet there's something additionally involved.

Good luck,

------------------
Larry Bible
'84 Euro 240D, 516K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles
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