No smoke machine? No problem. Learn how to check for engine vacuum leaks using visual cues, soapy water, and DIY tricks to fix stalling and rough idling.

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 ...

Shutterstock // Setta Sornnoi Over time and miles, your car might start to slow down. It might not accelerate as quick ...

While carbon buildup happens on essentially all engines, gasoline, diesel, N/A, or boosted, it's an increased concern in GDI engines. Standard Electronic Fuel Injection features injectors higher in ...