"A tapping/rattling noise may be noticed from the valve train area. This operating condition can occur on new vehicles which have been delivered to Mazda dealers (due to loading and unloading from transport trucks or customers moving their vehicles in and out of their garages to wash the vehicle, etc.). This condition may also occur if the engine is not allowed to warm up after multiple cold starts."
Mazda Service Alert SA-026/23 - Tapping/rattling noise may be noticed from the valve train area
- Thread starter Kedis82ZE8
- Start date
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- Plano, Texas, USA
This valve train tapping noise Service Alert looks like the old SA getting rid of the air bubbles trapped inside of switchable hydraulic lash adjusters used by cylinder deactivation. I doubt this procedure, racing the engine at 2,500 ~ 3,000 rpm for 2 minutes, actually would prevent air bubbles happening again.
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- Plano, Texas, USA
Based on this Mazda’s SA and prior, this problem happens ONLY on 2.5L NA with CD, not on ALL engines.
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- 2014 & 2019 CX-5 Touring(s)
Yeah, the pdf clearly states for each model "with cylinder deactivation"
yes
1
181962
It's been elevated to a meme around here. All that's left to do is print a t-shirt.Here we go again with the CD "drama topics"
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- Plano, Texas, USA
Actually there’s another related TSB which says the switchable HLAs need to be replaced with a revised version.
