Question about 2002 Mazda MPV

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Worsening shudder I have a 2002 Mazda MPV with about 60K miles on it. Recently noticed an increase in shudder both when idling and accelerating. doesn't seem to be directly related to engine speed. home diagnostic tool showing codes for misfiring #4 cylinder and another for 'system too lean'. Getting to the point that the engine seems to be almost stalling. this has been going on for about 4 days now. Any tips would be very much appreciated. Mike

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Do a compression test on the cylinder and compare it to a cylinder on the other side. If the compession reads lower in #4 the chances of the head gasket leaking is pretty good. What's happening is #4 cylinder may be blowing air into the cylinder next to it. You will not have any water in the oil or visa versa if this is happening.

Posted on Jul 08, 2008

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