Quote:
Originally Posted by FredG
Pretty much the same issue I had about a year ago right down to the black smoke. Ran fine till heated up. Stalling. Hard starting. Black smoke. Only happened after car ran for a while. Went right to the carb to check for leaking fuel, fuel pressure, vaporlock, float levels, leaking needle and seats etc. Turns out it was the coil. MSD ignition. Changed the coil. Problem was gone. I would have sworn it was a carb issue. Found the solution on the Holley forum.
Fred
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Yes, an electrical component that's heat sensitive could well get flaky once it heats up, then resume normal operation once it cools down. It may do this a number of times until it ultimately fails.
I didn't have that problem, but did end up frying the original analog MSD 6AL box. It was mounted on the firewall, with an
oil-filled coil on the front of the engine. The replacement (digital) box is above the passenger footwell, and the replacement coil is epoxy-filled and mounted on the firewall.