15-03-2025, 05:07 PM
(This post was last modified: 15-03-2025, 05:07 PM by John Cornforth.)
Hi
The coil primary voltages and currents look normal, i.e. roughly 6 Volts, 1.5 Ohms and 4 Amps. The resistance of the closed points should be less than 0.1 Ohms so I assume you mean 0.05 ohms not 0.05 kilohms. This suggests the points are clean.
Even if the condenser is faulty I would expect some sort of spark
I agree with Andrew that you should try taking a single HT lead direct from the coil "tower" and either hold it close to earthed metal or better still use an old spark plug with its body resting on earthed metal. This eliminates the rotor arm and distributor cap as a source of trouble.
If that test is passed but stlll no spark from the plug leads, the finger of suspicion points to the rotor arm, the distributor cap (including the carbon button) and the plug leads.
The coil primary voltages and currents look normal, i.e. roughly 6 Volts, 1.5 Ohms and 4 Amps. The resistance of the closed points should be less than 0.1 Ohms so I assume you mean 0.05 ohms not 0.05 kilohms. This suggests the points are clean.
Even if the condenser is faulty I would expect some sort of spark
I agree with Andrew that you should try taking a single HT lead direct from the coil "tower" and either hold it close to earthed metal or better still use an old spark plug with its body resting on earthed metal. This eliminates the rotor arm and distributor cap as a source of trouble.
If that test is passed but stlll no spark from the plug leads, the finger of suspicion points to the rotor arm, the distributor cap (including the carbon button) and the plug leads.