Mazda CX-9 This larger SUV adds a V6 option, as well as more cargo room, to the CX-7 option.

CX 9 Spark plug replacement

Old 01-27-2017, 02:56 PM
Junior Member
Thread Starter
Join Date: Jan 2016
Location: Grass Valley Ca
Posts: 1
Default CX 9 Spark plug replacement

Hi everybody,
It's been quite a while since I've joined the group and have a few questions about some routine maintainence... I have a 2010 CX9 with 76000 miles. I checked the info screen and get 20.1 Avg MPG. So do you think I need to change the spark plugs. I know it is quite a jop to do this and I am up to doing it but if changing the plugs doesn't make a change in the MPG I am not sure if I want to do it. Another question I have is about changing the anitfreeze.. I checked it with an antifreeze tester and it read okay. All of your comments are helpful thanks.
Old 01-27-2017, 04:59 PM
Junior Member
Join Date: Nov 2016
Location: CALGARY
Posts: 13

its suggested to change plugs every 116, kms or unless its giving you problems
its about 2.4hrs time to change plus plugs and gaskets

hope this helps
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