2016 Mazda CX-5 GT AWD w/Tech Pkg
- Plano, Texas, USA
Most definitely in my opinion. Mazda has to come up a solution fixing the rocker arm falling issue, and a software fix is the easiest and cheapest way to do. Honda did the same thing with PCM software fix for its oil dilution issue on Honda 1.5T. But software can only do so much for certain controls. The rocker arm for Mazdas cylinder deactivation doesnt have any physical barrier to prevent its falling. Any unexpected oil pressure changes may cause the rocker arm losing the support by HLA and falling. And the control of oil pressure is a complex matter and involves too many outside variables such as oil viscosity.I wasn't aware of this, not to get off topic but do you think the CDA issue will go the same way?
Theres another design issue on HLA for CD I can never figure out. The purpose of hydraulic lash adjuster is to eliminate the need of adjusting valve clearance. But these PLAs for cylinder #1 and #4 use a lock pin to prevent collapse and push down the valve. Does this mean it has lost the feature of hydraulic lifter function and the periodical adjustment on valve clearance is required like the old days?