Mechanics

MERCEDES BENZ C230 SPARK PROBLEM

1999 Mercedes Benz C230 • 80,000 miles

My code reader says PO300, PO301, PO304, which is multiple cylinder misfire, cylinder #1 misfire and cylinder #4 misfire. Can you tell me where I should begin looking. Could it be a spark plug wire or in the cap?
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Up29balne1
February 27, 2013.



Spark plugs and wires are the most common cause of misfires. If new ones don't help, swap some injectors, then see if the misfires show up for different cylinders.

Caradiodoc
Feb 28, 2013.
Thank you, I will start there and hopefully that is it. I will let you know. Thank you again and this site.

Tiny
Up29balne1
Mar 4, 2013.