How to change the spark plugs on a 2019 Mazda CX-9 with the 2.5L Skyactiv engine. Process will be the same on all 2nd gen CX-9's (2016+) and other Mazda's with the 2.5L Skyactiv.
You may want to change the title of this video to mention it also applies to the CX-5 models that have a turbo - Same engine and turbo as the CX-9. I’ve got a 2020 CX-5 Grand Touring Reserve with the turbo motor and your video was exactly what I needed. Same requirement to change out spark plugs every 40,000 miles. Thanks!
Did you have to remove any hoses or additional bolts? In total I removed 4x 8 mm, I didn't not remove the 10mm on the front right of vehicle because it doesn't seem to be interfering with access
Thanks for the video. Just did the plugs on my 2018. One addition to make things easier, disconnect the vacuum hose that interferes with the right-most coil plug. That will help it drop straight in without having to fiddle with the angle.
I have a 2018 and I'm in the middle of replacing my spark plugs, and I can't drop in the far-right coil. It seems that those hoses have some slack on 2019 but not on 2018. I know nothing about cars so I'm always afraid to disconnect things. You disconnected that one hose - the vacuum hose. I'm guessing that is OK and safe to do? No issues with your car afterward? Thanks
@@lepsimica No problems with temporarily disconnecting the vacuum hose. Take a picture of that area so you can refer to it later if you need to. good luck!
Great video! Thank you for sharing and providing such level of detail. I own a 2016 CX9 and like to do my own PM work. Besides oil changes and trans dump and fill, I recently added my own catch can as well. Looking forward to more videos.
@@NikeChecksHtx I took It off. I though I was connected to the PCV system but I wasn’t, so I removed it. Choosing to do intake cleaning every 30k miles.
Great video, very helpful for us DIYers. I have a '21 CX9 so I'll be needing to replace my plugs eventually. Although, your old plugs didn't look that bad.
Preparing to do my first 40k plugs on the 2.5T. FWIW, NGK advises to not use anti seize on the threads, stating that they come from the factory ready to go.
great video learned a lot about replaing the spark plugs, just wondering at the right rear of the engine cover there seems to be a hose disconnected when you turned on the engine, is that something to look out for ?
I have a 2018 CX-9 with turbo and there is a wiring harness sitting on top of rear bolt holding the plate in place. The harness is attached to the plate with a plastic clip right next to the rear bolt so I can’t move the harness away and can’t get to the rear bolt. I’m concerned I will break the clip if I try to remove it.
Fantastic video. Any chance you can also post a video of changing the rear brake pads & rotors (with EPB). Replacing the engine belts. And replacing the engine coolant please? [All on the CX-9)
I'll be doing the brakes within the next year, and will definitely post a video then! The belts and coolant are coming up very soon, so you should be able to expect those within the next few months most likely.
Hi, is it ok if instead of using the 1/4 inch drive 8mm and 10mm sockets plus ratchet that i were to use the 3/8 inch drive versions of those? I am new to this. This is the best tutorial i have seen for this.
So I had the same question. After some research and a few phone calls I did confirm that these are same spark plugs for the CX5 signature trim. The NA engines have different spark plugs as I’m sure you can imagine. Hope this helped.
Tip: I did this but when I started the car it was misfiring horribly. The ignition coil must be inserted back at the right angle otherwise it will not make contact with the plugs thereby misfiring.
Thank you for the video, this was super helpful and i was able to replace my plugs today. Just a small mess up, i dropped one of the bolts holding the metal bracket behind the engine and I am not able to find it!!! Do you have any idea what is that bracket called, i wanted order the replacement bolt as i just cannot seem to find it behind the engine!!!
Sir , please help ,after I change my spark plugs at 53000 mileage my gas mileage goes down to average 15 / 16 whereas it used to be 20 around. I bought NGK iridium leaser spark plugs. Any idea what to do?
That's interesting, I wouldn't expect to see that. I'd check the ignition coils on the spark plugs and make sure that there are no issues with those. They often sell rebuild kits for coils where you can replace the boots and springs.
@@Kenny.Le2006 hi Kenny i know it is too hard but the trick is you need to drop the coil upright as much as possible from the beginning. if you start to drop it inclined it doesn't fit right. let me know if it works
Hello, this video is too long for a spark plug replacement. Many people would scroll away if they see the half an hour duration. Please use this feedback for your future videos.
Not true. This was a great step by step video of the process thoroughly explained. This a process that should not be rushed or taken lightly. I have stopped watching other videos of spark replacement because they were going to fast and not explaining what they were doing. Good for them but terrible as an instructional video.
