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Old 04-02-2011, 02:50 PM   #19
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You CANNOT accuratly read a plug that has been drive cycled on , it has to to be a FRESH plug installed brought to temp , do a WOT pass on it and as soon as you let off the throttle kill the engine , this is the ONLY TRUE WAY to read a plug and get an accurate reading
Doing it this way you can read both timing and fuel

"Mechanical timing" is used for distributor engines , what your talking about is the Cam timing and has nothing to do with engine timing so are you talking Cam timing or the Engine timing ?

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