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procedure to replace sparkplugs S80

posted by  KlausC on  Fri Sep 25 09:35 CST 2020
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Volvo engines need to have the spark plugs replaced at 50-60K miles. Not so much that the plugs have totally failed, but that the steel to aluminum contact will result in 'frozen' plugs. At your car's age, I would have a reputable shop do the replacement, letting them know that they might have a problem removing them.

The coils should lift right off the spark plugs, about the same resistance as the old fashioned coil wires used pre 1999. The coil itself should turn slightly after the 10mm screw is removed.

If you decide to remove the spark plugs yourself, do NOT use too much muscle/torque to loosen them. Try soaking them in PB Blaster overnight. Good tutorial:

https://www.youtube.com/watch?v=9OTsu5MizSE
--
Keeping it running is better than buying new






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