Quote:
Originally Posted by Ivanerrol
Sorry last week I had to pull the resistor plugs out of my W202 as they were causing a slight misfire when cold. Plugs were only 12,000 kilometers old.
Installed correct NGK copper non- resistor plugs - BCP6ESF all is now well.
These same plugs are the correct variant for a M103, early KE M104.
NGK BCP6ESF. If you do a lot of stop start traffic you can install the BCP5ESF
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You do know you can get faulty parts even in a new box. I have lost count over the years of how many faulty ignition components I have returned. Seems you had same problem.
However, I reckon you will find your ignition/fuel system below par and spark plugs took that crap in the face and failed.
Of course it could be the motor is not tight any more....same results. Oil/carbon/fuel and a weak ignition...wires etc, will kill any plug.
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