Over time and miles, your car might start to slow down. It might not accelerate as quickly as it once did; the engine may not run as smoothly as you remember, or the fuel economy may dip—but ...

Here’s how you started a car with a carburetor on a cold morning back in the “good old days.” You’d pull out the choke, pump the throttle a few times, and turn the key. If you didn’t overdo it and ...

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