Among the many pesky issues that can confound do-it-yourself mechanics, one of the most simple yet elusive that impacts overall drivability is the common vacuum leak. This is especially true if you're ...

SpaceX has notched up another milestone in the development of Starship, fixing its Raptor Vacuum engine to the spacecraft and test-firing it for the first time. This marks another important step in ...

No matter how tightly within the prescribed specifications an engine's piston clearance and ring tension are in its cylinders, a certain amount of fuel and combustion vapor slips past and enters the ...

Carl Arentz bought his 1964 Chevelle two years ago, well used but running. "I'm well aware that it's an old dog that should have been put down," he says, "but I can't bear to see these cars go to the ...

Alliant Techsystems recently demonstrated a critical capability of its liquid oxygen (LOX)/Methane rocket engine by igniting it in a vacuum chamber. The successful ignition test was designed to ...

Boom! SpaceX puts its upcoming Starship engine through its paces in a video shared Friday, which shows the Raptor engine completing a full-duration test fire at the firm's rocket development ...

Jackson Ryan was CNET's science editor, and a multiple award-winning one at that. Earlier, he'd been a scientist, but he realized he wasn't very happy sitting at a lab bench all day. Science writing, ...

SpaceX keeps notching Starship milestones. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. An important piece of SpaceX's new Starship megarocket ...

Every engine has some sort of crankcase breathing system. The internal combustion process creates pressure, some of which makes its way past the piston rings-along with fuel vapors-and into the rest ...