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Old 04-06-2017, 09:17 PM   #1
Lt. JG
 
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Default Merc 5.7 Carb (2002) Spark Plug Gap
Guys, changing my plugs on my 2002 merc 5.7 thunderbult carb engines. I found a few places mention .45 gap for the plugs. Can anyone confirm?
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Old 04-07-2017, 12:24 AM   #2
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That's the correct gap, confirmed.
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Old 04-07-2017, 02:23 AM   #3
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the replacement plugs are:
Champion #401, AC RS12YC, NGK BPR6EFS- gap for all .045- anti-seize on threads- torque to 20 ft. lbs (27Nm).
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