One of the most basic circuits found on every gasoline-powered vehicle is the ignition coil. This transformer takes low-voltage, high-amperage current and changes it into high-voltage current. It has two windings that are not physically connected. What connects them is magnetism. The primary creates an electromagnetic field when system voltage is applied. When the power is turned off, the magnetic field collapses. The energy from the primary is transformed by the secondary windings into high-voltage power that can jump the gap between the electrodes of the spark plug; this is called inductance.
Many alternator problems turn out to be nothing more than a bad connection at the alternator or a bad wiring harness.
The area of contact between the lifters and cam lobes is the highest loaded surface inside an engine.
Here are six tips to use when diagnosing a vehicle with a dead battery.
Modern engines need to not only know the position of the crankshaft, but the position of the camshafts.
You might not be able to see it, but an accessory drive belt is always both speeding up and slowing down.
On most systems, idle speed is completely controlled by the throttle plate angle.
What if there are no codes and a misfire is intermittent? This is where it gets complicated.