[Superman]

I think a cap and rotor for your car costs a total of less than $20. I find, and I've reported here on a number of occasions, that caps and rotors are a wear part, and if yours are older than 10-15K miles, then you need to change them.

Also, I just recently, this weekend, had an ignition problem. Thanks, Warren, for your help. The problem mysteriously went away, but not until after the car twice refused to start at all during dozens of attempts. I think unplugging and re-plugging the CDI plug simply improved a corroded connection. The green wire sends a very wimpy signal to the CDI box.

So I'm suggesting it could easily be something as simple as that. Poor connection wimpy signal. Or, it could be on the high-voltage end, like Warren suggests. Ignition systems are incredibly persnickity. They've got wimpy signals, and then they've got that high-voltage end. The cap, rotor and ignition wires. High voltage electricity behaves pretty interestingly. That signal is so anxious to get to ground, that it's choose the most interesting paths. If you cap is old, it'll run right down the dust particles on the inside of the cap and ground to the distributor body.

I (and I think Warren) am suggesting that you deal with the simple stuff before you go sourcing a replacement CDI box.