2018 CX-5 GT Ticking sound?

[concept]

I recall in 2010 or so when Car & Driver first tested a Skyactive engine, the writer commented that the tapping noise sounded like a quieter diesel engine. I noticed the same when I bought my 2014 3S 2.5 but remembered the C&D review and though nothing of it. My car now has 30,000 miles on it.

 

[Ninety-9]

Did anyone see the last video? Thoughts?

 

[concept]

That seems to indicate an interference of some kind - not normal at all, in my opinion.

 

[charlema]

And those tapping noise complaints here are all from 2018 CX-5 and newer with CD. It’s CD related issue.

Here's the most recent TSB on 'Tapping noise from engine', which supersedes all prior communication on this subject. It has additional information, but IMO in no way will make anyone feel happier about owning a 2018-20 Skyactiv-CD engine.

The most important new statement from Mazda in this revised TSB is that 'the switchable HLA has been modified for increased oil supply to reduce air bubbles in the oil passage'. So this certainly sounds like confirmation from the automaker that the factory switchable HLAs are not subject to 'failing', but instead were designed incorrectly by not providing for enough oil flow.

And so the new question question becomes, how many engines will eventually produce whatever set of conditions are required to create the low oil flow, air bubbles, and the noise? Just another episode in the Skyactiv CD horror show.

Really appreciate the conversations in this forum. 2018 CX-GT just started ticking and wondering what caused it. Will be taking to our dealer to have it checked out. Sound diminishes with warming engine, but still present.

 

[yrwei52]

Really appreciate the conversations in this forum. 2018 CX-GT just started ticking and wondering what caused it. Will be taking to our dealer to have it checked out. Sound diminishes with warming engine, but still present.

Be prepared. Make sure to take the latest TSB with you and present it to your Mazda dealer.

Also you can read macker’s posts for his experience on how to get his switchable hydraulic lash adjusters (HLAs) replaced for the same problem:

CX-5 Tapping noise

 

[edmaz]

Really appreciate the conversations in this forum. 2018 CX-GT just started ticking and wondering what caused it. Will be taking to our dealer to have it checked out. Sound diminishes with warming engine, but still present.

First of all, how does the noise compare to the noise in the video from macker's post #30 in the thread that yrwei52 linked above? And is the noise in yours reasonably consistent, so that you'll likely to be able to reproduce it for your dealer's service department?

 

[madtrinjax]

I hate to ask as I know it is a guess but anybody have a rough order of estimate for repair? I have an appointment scheduled tomorrow with a local shop that specializes in asian imports that is less than a dealer but still going to cost her quite a bit.

 

[yrwei52]

I hate to ask as I know it is a guess but anybody have a rough order of estimate for repair? I have an appointment scheduled tomorrow with a local shop that specializes in asian imports that is less than a dealer but still going to cost her quite a bit.

The TSB attached in post #77 has a parts list and the labor hours the Mazda dealer can charge to MNAO. The labor hour is 3.5 hours for CX-5 which is at least $200 x 3.5 = $700. The revised switchable HLA part # PYFA-12-1A0A has the MSRP $90.52. You may need up to 8 pieces = $724.16. With many other gaskets and seals needed for the job, $1,800 would be my guess from Mazda dealer’s quote.

 

[N7turbo]

This shouldn't be a tough DIY, right? Pop off he valve cover and you have access. As long as we don't need a special tool to prevent valves from dropping. Never opened the valve cover on one of these.

 

[yrwei52]

This shouldn't be a tough DIY, right? Pop off he valve cover and you have access. As long as we don't need a special tool to prevent valves from dropping. Never opened the valve cover on one of these.

I agree. With the estimate of 3.5 dealer labor hours, I’d believe it can be a project for many capable DIYers.