What should the resistance be on a Delco ignition coil?
This reading of 8.84 does indicate that the coil’s secondary windings are not putting out as much voltage as they should; the minimum acceptable resistance reading here should be 11.00, with approximately 13.5 being normal. Here’s the primary reading on the new replacement GM Delco coil before I installed it.
What happens if there is no external signal to the ignition coil?
With no external signal to the coil negative primary post, voltage would travel through the ignition coil windings without inducing any secondary spark. A switch, or signaling device, triggers an interruption in the circuit.
What’s the normal voltage for an ignition coil?
Normal reading on the primary windings is 1.6, but 1.5 is still within the acceptable range, so this by itself doesn’t necessarily indicate a problem.
What does low voltage mean on coil on muscle car?
Check coil + with a Volt Meter WHILE CRANKING, if the voltage does NOT show at least 10V then you have an issue with the Brown wire coming off your starter solenoid’s right terminal. KOEO = Key On Engine Off, and KOER = Key On Engine Running.
What kind of transformer is an ignition coil?
An ignition coil is a type of pulse transformer that multiplies the low voltage received from the battery or alternator to many thousands of volts when the breaker points open and close.
What happens if there is no spark in the ignition coil?
Hence, without this high voltage, there is no spark and, consequently, internal combustion cannot take place within the engine. Simply put, the bottom line is without spark the engine doesn’t run.
What kind of ignition coil does a corvette have?
The coils on early Corvettes are black cylindrical devices; starting in 1975 the coil per se as a discrete cylindrical device was abandoned when GM made the switch to HEI breakerless ignition systems.
What should the ohms resistance be on a Harley Davidson ignition coil?
The specified ohms resistance for the primary of a 2000 carbureted Softail will not be the same as the primary of a 2005 Ultra. Therefore, it is important to use the correct electrical manual for your ride. When testing your Harley Davidson ignition coil you will be testing ohms resistance.
How does a single fire coil work on a Harley Davidson?
Single fire coils designate spark to only the cylinder that is on the compression stroke. Spark is delivered to one cylinder at a time. Harley Davidson Ignition Coils are known to fail. The longevity you get from your coil may depend on usage, demand on the coil or environmental conditions.
Why does my Harley Davidson ignition coil not work?
Sometimes a coil will only give a faulty reading when it is hot from riding. In this instance, it may be necessary to allow the coil to heat up before performing a resistance measurement. Exercise extreme caution when working around a hot motorcycle.
What’s the difference between dual and single fire coils?
Dual fire coils send spark to both cylinders, all the time. Regardless of which cylinder is on the compression stroke. Single fire coils designate spark to only the cylinder that is on the compression stroke. Spark is delivered to one cylinder at a time. Harley Davidson Ignition Coils are known to fail.