Car wont Run!

Holly carburetors - teaching people to swear 60 years!

Pull the top off of the air cleaner. Grab your flashlight.

Start the engine, and warm it up to idle. Is the Choke all the way open at warm curb idle? If not, correct the choke setting before proceeding.

Now, with the engine idling, look down the primaries at the throttle plates. The plates, and the boosters should be DRY.

If you see fuel on the plates, or fuel dripping from the boosters in the center of the bore - this is the problem.

There are several causes of this sort of issue with a Holley. Bad float valve / level, crud in the metering block, or a blown power valve.

You said the car ran ok recently. Did you park it for a couple of weeks? When you started it recently have you had a loud backfire through the carburetor?

B.