I just dropped a new 306 in my 68 and went to fire it up for the first time today and when I checked my wire coming from the harness that goes to the + side of the coil the voltage reading was spiking between 0 and 5.7 volts. Anybody konw what the problem is? Ignition is all stock except a mallory unilite dist.
HELP no spark
- Thread starter DarkoStoj
- Start date
There is a pink wire that runs from the back of the ignition switch to the coil. It functions as a resistor, and it sounds like yours is acting up. Your Mallory should get a true 12v assuming it is not still a points-based distributor, so you should replace the pink resistor wire with a regular one. (To start the car just to hear it, run a jumper from the + side of your solenoid to the coil.)
I think i got it figure out. I got 12v going to the coil without the car running. Will it drop down to 9v when the car is running? I don't want to take any chances and burn out the module in the distributor.
What should the voltages be to the + coil wire when
1. car is off
2. car is running
3. car is starting
What should the voltages be to the + coil wire when
1. car is off
2. car is running
3. car is starting
You should have zero volts with key off, and something like 8-9V with key on, assuming your resistor wire is still providing some "resistance".
It looks like more than 8-9V can spike your mallory unilite, so I'd proceed carefully here. Check out this link;
http://www.centuryperformance.com/mallory/unitest.asp
It looks like more than 8-9V can spike your mallory unilite, so I'd proceed carefully here. Check out this link;
http://www.centuryperformance.com/mallory/unitest.asp
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