Quote:
Originally Posted by cycleguy55
I've got the car running again, but get a surge / miss on light throttle cruise between 2,000 and 2,500 RPM. There's also more exhaust 'popping' or 'burble' on throttle-closed deceleration than before I replaced the ignition box and coil. There are no apparent issues at idle, when accelerating, or cruising < 2,000 RPM. I have not yet checked the timing but, other than replacing the magnetic pickup and distributor cap, the distributor was not touched.
Environment: - MSD 8477 distributor (magnetic pickup swapped from old MSD 8577 distributor in process of getting car running)
- Summit Multi-Spark digital ignition control box p/n , mounted behind dash ( https://www.summitracing.com/parts/sum-850610 )
- Summit Epoxy coil ( https://www.summitracing.com/parts/sum-850500 )
Questions: - Does this sound like an ignition or a fuel issue?
- Where do I start?
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Had the same problem with a cobra I just purchased. The small red wire from the msd box has to see 12 volts all the time. Unplug the coil wire from the distributor. With the ignition on, check to see if there is 12v at the msd box small red wire. Now, have someone crank the engine over, with the coil wire disconnected, and check to see if there is 12v while the engine is cranking. If not, the small red wire is hooked up wrong. Install wire directly to ignition switch, ign. terminal. Someone hooked up mine wrong. Mike.