Bad Ignition Coil Symptoms: 5 Signs You May Need a Replacement
All cars have an ignition system with one or more ignition coils. Ignition coils are designed to convert the low-voltage from the battery into the high-voltage needed to fire the spark plugs.
How to Test a Two-Stroke Engine's Ignition Module and Coil
The ignition coil or module for a two-stroke engine regulates the ignition power, and converts it to charging electricity for the battery system. When the module and coil begin to fail, it's typically because the units have been burned out. The result will be an engine that performs badly, if it starts at all. Testing such units involves using a few electrical tools to gauge if the part still works, since most modules and coils are sealed with no serviceable parts.
Ignition Coil: Basic Principles
The design of a conventional ignition coil is basically similar to that of a transformer. The ignition coil's task is to induce a high voltage from a low voltage. Alongside the iron core, the main components are the primary winding, the secondary winding, and the electrical connections.
How to Tell if You Have a Faulty Coil Pack
On newer vehicles, a coil pack replaces the distributor. It is an electronically controlled pack of ignition coils regulated by the car's computer and is used to create the spark for each engine cylinder's spark plug. Generally speaking, coil packs are much more reliable than distributors, because there are no moving parts and because they fire much less often than a distributor. Coil packs usually create a better spark, which in turn produces better combustion and horsepower in a car's engine.
What Coil Pack Works with a Rotary Engine?
Most rotary engines require a different type of ignition coil pack. Below are two, one for a standard replacement, and one that is a higher voltage performance type coil pack.