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Old 05-01-2019, 10:10 PM   #1
Cape Codder
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Default 3xxx SPARK PLUG GAP
How is a 3XXX Spark Plug gaped. The part of the plug that should be over the center pin is off to the side. With that how is this plug gaped properly?
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Old 05-02-2019, 07:44 AM   #2
Bob from Northport
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Default Re: 3xxx SPARK PLUG GAP
Run the feeler gauge between the two contact points.
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Old 05-02-2019, 09:39 AM   #3
Joop
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Default Re: 3xxx SPARK PLUG GAP
Shown is the feeler gauge you should use.


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Old 05-02-2019, 11:31 AM   #4
Bob C
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Default Re: 3xxx SPARK PLUG GAP
I think he is asking when the ground electrode is off to the side.


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Old 05-02-2019, 12:03 PM   #5
Ruth
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Default Re: 3xxx SPARK PLUG GAP
Quote:
Originally Posted by Bob C View Post
I think he is asking when the ground electrode is off to the side.


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That's the way I took it. I just bend the ground side away from the electrode if more clearance is needed. Bend closer for less. I don't see any other way to adjust the gap on the 3X plugs.
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Old 05-02-2019, 03:38 PM   #6
Kurt in NJ
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I have loosened the core and rotated it to adjust the gap and change the worn spot
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Old 05-02-2019, 05:01 PM   #7
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Default Re: 3xxx SPARK PLUG GAP
Thanks to you all for your comments and pictures!
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