What would cause my engine to miss when it is cold but not after warming up.
Sep 26, 2009 at 6:47 AM
2000 Mazda 626 Engine missing
WMUDLER
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Engine misfiring could be one of the following 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.
Sep 26, 2009 at 6:55 AM
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