Is the ignition coil on my Honda CT-70 working?
I am experiencing a No-Start/No-Spark condition on my “Factory-Original” 1973 Honda CT-70 3-Speed Automatic. I tested the ignition coil with a multi-meter.
Can a 12 volt ignition coil still work?
While ignition coils will generally last for the life of a vehicle, faulty spark plugs or spark plug wires can send irregular voltage surges through the ignition coil, causing the coil to burn out. You can test a 12-volt ignition coil for effectiveness by checking the resistance of its wire windings with a multimeter.
What is the primary resistance of a Honda ignition coil?
So I measured the primary resistance between the coil (+) & (-) terminals and got 0.22 ohms, which I think is too low. Checking the secondary resistance between the coil tower (including the spark plug wire because it’s all one piece) and the (+) terminal I got 10 K ohms, which I think is okay.
How to test a Harley Davidson ignition coil?
If the coil checks out test the main coil wire, that was removed from the distributor, for shorts. Set the multimeter to the “continuity” setting and insert one probe into each end of the wire. If the meter does not show any reading, or fluctuates, the wire needs to be replaced. How to Test a Harley Davidson Ignition …
How do you test a 12 volt ignition coil?
Turn on the multimeter and set it to the “ohms” function. Insert one of the multimeter’s probes into the center opening of the coil, contacting the metal terminal inside the coil. Touch the second probe of the meter to the ignition coil’s grounding terminal. The meter should read 6,000 to 15,000 ohms.
What kind of ignition coil does a Honda CT90 use?
The condenser is located at the coil on a DC-powered ignition system. Unfortunately for the seller and any Honda CT90 buyer, the CT90 uses a low Ohm primary 6 Volt DC ignition coil. The seller’s “Item Specifics” area states primary coil resistance is: 4.3k ohms +/- 10%.
How many ohms does a 12 volt coil have?
Some electronic systems even use the ‘standard’ coil- that is, nothing special, except a label. I don’t see where you should have any trouble with the 12-volt coil in your 6-volt system, as long as the 12-volt coil has about 1.5 ohms of primary resistance and secondary resistance in the range of 9000-10000 ohms; some variation is alright.
What should secondary coil resistance be on 12 volt car?
The normal, acceptable range for a standard 12-volt car is 1.5 to 1.7 Ohms. See if the reading is within this range. Set the meter to 20K Ohm setting, and attach the leads to the ignition coil’s center terminal. The reading for secondary-coil resistance should be 11, because if it is lower, that’s the reason why sparks are not appearing.