Regarding the lifters, a quick dose of Seafoam through the brake booster vacuum line solved the noise issue. My local auto shop teacher runs a Mazda Miata-only repair shop and said that a lot of these types of engines get carbon build up on the backs of the valves, not allowing them to close all the way (causing the lifters to be pushed more by the cam, hence the noise sounding like a lifter failure).
My current question is regarding the four speed automatic transmission in this car. My records indicate that the transmission fluid was flushed on 04/07/2007, with 79,584 miles on the vehicle. The car now has about 131,000 miles and I am wondering if it would be better to get the transmission fluid flushed or exchanged. In other words, would it be better to drop the pan and drain the fluid, or to connect it to a flush machine and have it changed that way? The transmission still shifts fine, and the fluid is just slightly discolored (pinkish-grey), with little to no burnt odor. Let me know, thanks!
Friday, July 1st, 2011 AT 10:23 PM