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How do these spark plugs look.
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#1
04-27-2023, 09:27 PM
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How do these spark plugs look.
Volvo XC90 2008 150K. Thought it was time to change the spark plugs and to my surprise, the previous owner must have done it 80K+ miles ago. Also, I was surprised to see Ford plugs.
How do that look? I wonder if the pointed tip is wear or that is how they come.
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Dudley Aldie, VA 99 996 C4 Black/Black Areo 86 951 Graphite / Burgundy 2002 BMW 530i 2008 Volvo XC90 1995 Chev Astro (workhorse going-bald) My Garage Build 
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#2
04-27-2023, 10:14 PM
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No idea how to read plugs, but that was the first era of volvo…might be original plugs or factory dealer replacements.
Did you know the xc90 V8 had its origins from the Yamaha Ford SHO V8 from the Taurus
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'64 356 SC '73 914 2.0 (2.8/6 conversion in progress) '65 Falcon 80 ‘19 SQ5 Gone but not forgotten: '02 S6 Avant - trans blew, but rebuilt as a 6-speed by new owner '99.5 A4 2.8QT - tree fell on it after 20 years ‘74 MB 280C - traded for paint/rust repair/6-conversion mods on the 914 
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#3
04-27-2023, 11:31 PM
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These are iridium plugs and the electrodes look like that when new. In my opinion they look pretty good for 80+k miles. They appear to have brown soot on the electrode with is a good sign of proper AFR. #1 appears to be a bit more fouled than the rest but in some cars that can be a function of the intake runner flow not being efficient as the others.
Ford owned Volvo in 2008 so that explains the FoMoCo plugs.
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Steve Potomac PCA Co-CI(retired) 89 944 Turbo Race car 85.5 944 NA son's 2015/2019/2020 944Cup and PCA Nat'l Champ racecar 94 968 1 of 11 Iris blue coupes 92 968 1 of 2 Tahoe Blue Cabriolets 98 993 C2S w/Aerokit II 77 911S Vintage race car project 70 Boss 302 86 Mustang SVO 08 F250 SD Diesel 15 Audi SQ5 "Noel spun! Noel spun! Don't do anything stupid, Dad." -the boy on the radio on the last lap of NASA race as the second place car spins behind me in T5 at Summit Point.
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#4
04-28-2023, 07:51 AM
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Just fine.
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