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Infiniti Forum: When to get tune up
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Old 11-02-2018, 01:19 PM
InfinitiPhil InfinitiPhil is offline
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Location: GA
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Default When to get tune up

Hello,

I am an owner of a 2104 QX80? At what mileage should I change the spark plugs?
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Old 11-03-2018, 03:50 PM
marctronixx marctronixx is offline
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are you experiencing some issues you think may be attributable to bad spark plugs? have you had the car diagnosed or checked the ignition coils?

rough idle?
surging?
increased petrol?

I think 100K is the max on the NKGs (assuming you have oem plugs still) but there could be reason to replace earlier if you are experiencing issues...

here's your maintenance book for your year:

https://owners.infinitiusa.com/conte...ance-guide.pdf

doesn't really say when (save the Q60 IPL model car)
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