Is there anything else you can do to test an ignition coil rather than just measuring the resistance of the primary/secondary windings?
I’ve been having a bit of a nightmare getting the Capri to run, so going back to basics and starting over with the ignition...
It looks like it’s had the wrong coil fitted. Voltage to the coil when not cranking is 12v, rather than 9v, which indicates the ballast resistor has either been bypassed or removed. The current coil is definitely one for an engine fitted with a ballast resistor, as measuring the resistance between the terminals shows 1.6ohms.
The resistance of of the secondary windings shows 7.5k ohms. From what I’ve read, 6k -10k is within the normal range. So on the surface that sounds fine ok. I obviously need to try a non ballasted coil, but what effect will using the ballasted coil have had? Burnt out components more quickly?
I’ve been having a bit of a nightmare getting the Capri to run, so going back to basics and starting over with the ignition...
It looks like it’s had the wrong coil fitted. Voltage to the coil when not cranking is 12v, rather than 9v, which indicates the ballast resistor has either been bypassed or removed. The current coil is definitely one for an engine fitted with a ballast resistor, as measuring the resistance between the terminals shows 1.6ohms.
The resistance of of the secondary windings shows 7.5k ohms. From what I’ve read, 6k -10k is within the normal range. So on the surface that sounds fine ok. I obviously need to try a non ballasted coil, but what effect will using the ballasted coil have had? Burnt out components more quickly?
