I was hired to get this 26 roadster PU "Running".
Was running when parked" LOL. Musta been 15 or more years ago. New valves, springs, wiring harness, cleanup of the generator and starter. IT RUNS! Cutout is bad but generator works. But runs only on the coils. Switching to mag shuts it off. The voltage at the mag connection when running is .34-.38 volts. Obviously way low.. what now?
Did it ever run on Mag? Stupid question but were you measuring using an AC range on your meter? Also the 2 digit readings with a decimal point make me ask if you were in fact using a digital meter? Usually digital meter readings taken with the engine running are not reliable readings because the ignition Radio Frequency Interference (RFI) interferes with the digital meters sampling circuitry. If you want to PM me offline I will give you my phone number and we can discuss it.
Yes I was using a digital meter on the DC range. Should I have used a A/C range? I have no idea if it ran on the mag when it was parked years ago, but I wouldn't be surprised if it didn't. It was not a well maintained car. bailing wire and chewing gum fixes. The switch and wiring all new and connected correctly, so I suspect the voltage out of the mag is not good. I did check continuity from the mag terminal to the coil box. Someone had bypassed the old original switch with a toggle switch which was bad!.. it's all new now.
Thanks for the offer of a phone call. I must decline due to hearing loss. phones and I often just don't mix.
You should have used the meter on AC with a pointer needle on it or in other words, an analog meter.
A quick check is to hook a 1157 bulb between the Mag wire and ground and rev up the engine.
The bulb should be fairly bright at a fast idle and burn out when the engine is reved up.
You might first just remove the Mag post and see if there's junk on it, causing a bad connection to the coils.