David Davies
In view of the mileage you may have carboned up valves, particularly if the misfire is more pronounced at idle.You do not give compression readings,but your manifold vacuum figure suggests mechanically sound engine.
Message Thread 
Mazda MPV 2.3 L3 2004 - Slight misfire, no codes - Unresolved # - Shane Gray November 17, 2014, 9:45 am
« Back to index | View thread »
on November 17, 2014, 5:41 pm, in reply to "