What should the output of the ignition coil be?
CDI output: Can be 5% to 30% less than the output from the stator. The minimum we have seen working is around 18vAC. The function of the ignition coil is to multiply the voltage of the power supplied from the CDI, and to send the multiplied power to the spark plug.
How to troubleshoot a GY6 150cc ignition coil?
Troubleshooting the CDI: Ensure your multimeter is set to read in VOLTS “AC”. Just like before: while cranking the engine, use a multimeter to check for voltage at the two primary wires of the ignition coil.
What to do if there is no spark in the ignition coil?
Just like before: while cranking the engine, use a multimeter to check for voltage at the two primary wires of the ignition coil. Connect your back multimeter lead to the black ground wire at the coil, and with the red lead to the lighter color wire (usually blue or purple, but it varies).
What happens when the ICM fails on a GM car?
Generally, when the ICM or the ignition coil fails, your GM car or truck will Crank but NOT START. Specifically, the ignition coil will not spark.
How do you remove a coil from an ignition coil?
Use a nut driver or a small wrench to loosen the securing nuts on the coil terminals and remove the leads; the positive side of the coil has a condenser lead attached in addition to a positive lead. Then loosen the bottom clamp screw, pull out the center cable that goes to the distributor and remove the coil.
What happens when the ignition coil does not work?
NOTE: When the ignition coil or the ICM start to fail, they don’t always cause a cranks but does NOT start condition, since sometimes these components can fail intermittently. In this scenario, your vehicle will start and run most of the time, but every now and then it won’t.
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.