Vapor Lock condition?????

[Hal Copple]

on my SPF, some years ago, had some subtle corrosion on the horseshoe connector at the coil, i would lose power and spark, would clean it, finally, put on a new coil with clean terminals, cut off the horseshoe, put on a coil with ring terminals, never had a problem with lost spark ever again. Also, check your ground strap for a good connection to the frame.

By the way, when it is warm, my Holley will boil over and percolate the gas, despite my prevention measures (four hole phenolic spacer, carb heat shield, etc), and if SC is still selling "winter gas", my car will stall, stumble, and flood. I can tell in the fall when winter gas comes out, and tell precisely when it goes away in the spring. I have an in-cockpit VDO fuel pressure gage, and can tell and then watch my fuel pressure drop when my carb is boiling over. You can't overpressure a Holley fuel bowl, as it is vented, but you can boil the gas out and down the intake.

Sometimes, on warm winter days, i have to put a foam block under the rear of the hood, to prop it up an inch or so, to allow hot air out, reducing my carb boiling. Or manually run my fans to keep the motor a bit cooler. If it floods out, which it will do even at "speed", like last week, i just try to keep speed up until i can see my carb getting cooler fuel, then my pressure will come up.

If i stall, then i hold the throttle all the way down, to "air out the motor", and spin it until it reluctantly fires with black smoke out the exhaust. Pressing the throttle down does of course put a "squirt" down the carb, so don't pump it, just hold it down. By the way, one way to slightly reduce this is to drop your float level a tad. But too much, and under full throttle, you will run your bowls dry, creating a lean condition.

check out the simple things, and try propping your hood open the next warm day, and see if you have the problem.

Remember, you are driving a race car on the street, and you will learn to live with the compromises.