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

Fuel does not stay fresh forever. Gasoline begins to oxidize in a few months, forming sticky varnish and gum that can clog ...

The regulator controls fuel pressure for your engine. When it goes bad, signs include misfires, black exhaust smoke, stalling ...

Fuel systems are usually considered only when the engine falls flat at the top of Second gear, telling you in no uncertain terms that your system is inadequate. How you upgrade your fuel system and ...

I own a 1991 Corvette that’s developed an unusual problem: It will not start when cold unless I squirt ether starting fluid into the intake manifold, at which point it starts immediately. Once started ...

General Motors's Active Fuel Management (AFM) technology utilizes hydraulic valves, solenoids, and advanced software to shut down half of the cylinders in a V8 or V6 engine to save fuel. The system ...

Most diesel truck owners understand how to put diesel exhaust fluid (DEF) in their trucks. However, some make the mistake of getting DEF in their fuel tank instead of the dedicated DEF tank. As the ...

Self-learning electronic fuel injection (EFI) systems have made converting to fuel injection far less painful. This has removed complicated EFI tuning as an excuse not to convert. But a far less ...

The US Federal Aviation Administration has proposed requiring airlines to replace fuel system processors on Boeing 737 Max jets, citing problems with fuel shut-off systems. Boeing already addressed ...