not sure if feasible... but could you program the ecm firing over such that 5&7 become 1&3? THEN switch the plug wires and injector connectors so that actual firing order is correct?... then if it still shows a 5/7 miss you know its mechanical, if now 1/3 you know its electrical.
Last edited by V; 03-05-2013 at 09:10 AM.
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