Explorer, Sport Trac, Mountaineer & Aviator 1991-1994, 1995-2001, 2002-2005, 2006-2010 Ford Explorer

PO300,PO305,PO306, PO316 Not Coil Pack

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  #16  
Old 05-12-2011, 09:40 PM
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Did you do the compression, hot engine, WOT, fully charged battery, wet or dry???
 
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Old 05-12-2011, 10:26 PM
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I will do that tomorrow. It was late today. Not of them dropped in a min. or so. I assume I just leave the gauge on for a while to do that test. How long for each cylinder. I don't understand why a busted gasket won't leak down though.
 
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Old 05-12-2011, 11:03 PM
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Originally Posted by HSI111
I will do that tomorrow. It was late today. Not of them dropped in a min. or so. I assume I just leave the gauge on for a while to do that test. How long for each cylinder. I don't understand why a busted gasket won't leak down though.

How to do Cylinder Leak Down Testing- Car Craft Magazine
 
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