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25 January 2020 #1
- Join Date
- 02 Apr 2017
- Location
- Santa Cruz, CA
- Posts
- 3
- Saab(s)
- 2009 9-5 Sportscombi 2.3t, 2010 9-5 Aero XWD
Spark plug gap
2010 9-5. 160k and I’m replacing the coils and spark plugs. Using NKG DILFR7B10G spark plugs which come pre-gapped at .040 in. but WIS says .043 in. Which should be used?
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26 January 2020 #2
Frank Administrator
- Join Date
- 30 Jul 2010
- Location
- USA - Netherlands
- Posts
- 7,901
- Saab(s)
- previous: 2006 9-3, 2001-06 9-5, 2011 9-4X
I would use the specs in the WIS.
However.. the difference is only 0.003" so 0.07 mm. You must have very accurate measuring tools to be able to measure 0.07 mm so I would use the pre-gap and not mess with it.
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