Q) How come there's so much "pollution junk" on my engine?
A)Because the internal combustion engine is an inherently dirty design. But with the right controls and add-on devices, it can run exceptionally clean -- not as clean as a zero emissions vehicle like an electric car, but clean enough so as not to pose a serious threat to the environment.
A)Because the internal combustion engine is an inherently dirty design. But with the right controls and add-on devices, it can run exceptionally clean -- not as clean as a zero emissions vehicle like an electric car, but clean enough so as not to pose a serious threat to the environment.
audi a8 L 3.2 fsi engine sound noisy for a 2007 like a ticking or knocking sound is it common
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