We take a close look at what engine compression means, what it does, and how to test it.

Proper oil pressure is vital in order for your vehicle to perform at its best, so if the pressure is low, here are five causes and fixes to try.

Low- And High-Compression Fuel Economy Engines: The Techniques Are About The Same, But The Approach To Each Is Somewhat Different. A. Most stock cylinder heads have factory-cut undercuts of the ...

But too high a ratio causes knocking—premature detonation of fuel-air mixture during the engine's compression stroke caused by high cylinder temperatures.

What is a Nissan VC-Turbo? The innovative engine architecture, launched on the company's premium 2019 Infiniti QX50, promised to solve a recurrent problem with low-compression turbocharged engines ...

This turbocharged gasoline engine can switch compression ratios on the fly. Here's how it works—and how it achieves better power and efficiency.