Truck owners choose the 5.9 Cummins engine because it combines outstanding power features with exceptional durability.

One of the distinguishing features is that they don't need valves to operate. That's to say, the Wankel rotary engine design doesn't have valves -- but quite a few rotary engine designs have ...

This means it is a reciprocating rotary engine. Yeah, weird stuff. The camshaft is also centrally located in the crankcase and still runs at 50-percent crankshaft speed but only actuates one valve ...

While that makes me a little sad, it helps me appreciate the revival of this ancient Willys-Knight sleeve valve engine all the more as this guy in 2025 got it going after it had sat for more than ...

National Company Law Tribunal (NCLT) approved the merger of Rane Engine Valve Limited and Rane Brake Lining Limited with and ...

Popular Mechanics’s automotive experts outline the tools and techniques proven to smoke out even the toughest to find vacuum ...

While the poppet valves work well at low speeds, they are unreliable at high engine speeds, and the “timing,” or opening and closing of the valves, is uncertain. This is the gravest objection ...

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...

ATLANTA — The Ford Motor Company has recalled certain vehicles because of faulty engine intake valves which may crack and ...