Mechanics

MIS FIRING

1997 Mercedes Benz 200e

Engine Mechanical problem
1997 Mercedes Benz 200e 4 cyl Two Wheel Drive Automatic 128000 miles

My merc is mis firing normally at low revs. Could it be a worn plug or a sensor or something else.
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Dougsolv
May 13, 2009.




Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.

Rasmataz
May 13, 2009.


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