datsun40146
Member
I bought my 99' Mazda Miata about 2 months ago I guess. It has a 1.8 Liter four cylinder and a 5-speed transmission. I've put right around 800 miles on it, and I've been driving spiritedly for some of them. Anyway, I know all about lifter tick having grown up with manual lifters Datsun and VWs its not the problem here. I happened to turn off my radio today and I heard a slight repetitive sound similar to a ping or a knock is the best way I can describe it. I took two videos with my camcorder and one can hear the sound and the lifters clattering away in the background. Can anyone ID the noise? The car is not burning any oil or loosing any coolant that I can see. Its still have plenty of power, and it not using undue amounts of fuel. The car has right at 100K on the engine and all the maintenance has been done. I have a stack of records an inch and a half thick to prove all of them. Anyway the noise is present throughout the rev range. Here are the video. In the frist I vary the rpms.
In the second I hold them constant.
Please ignore the quality of the video, I was trying to get the sound captured.

In the second I hold them constant.

Please ignore the quality of the video, I was trying to get the sound captured.