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

High power, or low weight? We're watching that all play out as a 1968 Oldsmobile Cutlass W31 and a 1972 Pontiac GTO 455 HO go ...

the intake valve(s) open(s), and the vacuum created by the piston’s motion pulls the air/fuel mixture in. Or if the engine has direct injection, the valves let in the air while the injector sprays an ...

On the Honda 3.5L V6 (and others), the Variable Valve Timing and Lift Electronic Control (VTEC) system boosts performance and ...

Over time and miles, your car might start to slow down. It might not accelerate as quickly as it once did; the engine ...

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If the engine has conventional injection, fuel is sprayed inside the intake manifold where it mixes with air; this air/fuel mixture is then pulled through the intake valve or valves into ... When the ...

They generally proscribed a vessel containing fuel that intake ... and-valve setup). In order for fuel and air to mix properly, the fuel must be converted from liquid to vapor. Atomizer nozzles, or ...

On Jan. 8, 2024, a fire broke out in the engine ... type of valve specified by the vessel’s fuel oil system drawing. Rather than an angle stop valve, a similar looking angle stop check valve ...