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What is your question?
The mazda dealership recommends having the intake valves cleaned, to remove carbon build up, at 25,000 miles. Of course, something they don't mention as routine maintenance when you purchase the vehicle.
2 Replies
The cost will be removal in installation of the intake manifold, replacement of the intake manifold gasket, and the cleaning will more than likely be the shops hourly rate. Likely that one of the certified shops here will be much more affordable than the dealership: http://repairpal.com/mazda-within-10-miles-of-stafford-texas-77477
We have a new chemical process to clean the valves on direct injection engines, please give us a call at Christian brothers Automotive North Katy, 281-578-7799. This process is not invasive and 100% guaranteed. No need to remove intake manifold.