So I've been having some ignition problems. My 40 was running a bit rough and rather than just replacing the stock parts with more stock parts, I sprung for an Accuspark electronic ignition upgrade. The first thing I discovered is that the ballast had been removed at some point in the past, which was probably why everything was wearing out much faster than expected. So I replaced the distributor internals with the Accuspark ignitor, got a new rotor and cap and replaced the ignition coil and spark plugs with some with a bigger gap. I ran a new switched ignition wire to the ignition coil because the old one had a fair amount of resistance in it. After doing all this, no spark. The guy who sold it to me took a look and said everything looks fine. So I took it back to stock, no spark. I've tested the following: Putting a multimeter from the positive terminal on the ignition coil to the battery earth with the ignition switched on I'm getting around 12v. Putting it across the negative terminal and the battery earth I'm getting about 1v. Pulling a sparkplug out and resting it on the negative battery terminal while it's still plugged in gives no spark. Fairly sure the ignition leads are OK. Should I also be disconnecting the condenser? I've tried it both with and without it. What else can I test? The thing hasn't run in about two months and I'm starting to get antsy to drive something. The last time I took it to a sparkie I got charged $900 to replace the battery so I'm really keen to avoid going back.