The Ford Barn

Penthode · 05-23-2019, 11:47 PM

I had been frustrated for sometime with stalling of my '29 Tudor when pulling up to a stop. I have performed all the standard tests and remedies including checking ignition , fuel flow and removed and examined the carburetor to no avail.

I finally bit the bullet and decided to carefully and methodically go over the Zenith carburetor. First step was examining all the passages. I used the paperclip trick forced down the passages after disassembly. The upper casting idle path was clogged. I poked and rotated the paperclip through each passage. The main, cap and compensator jets were too large and so I soldered them up and used the micrometer to select the appropriate size drill to match the original Ford dimensions.

The long and short of it is I went for a drive tonight and the performance has been transformed. I can pull up to a sharp stop when cold or warm with out a stutter of a problem. Lots of power and she idles smoothly at very low revs.

Conclusion? Patience and perseverance. And don't give up on the Zenith!

05-23-2019, 11:47 PM	#1
Penthode Member Join Date: Oct 2016 Posts: 60	A Carburetor Story I had been frustrated for sometime with stalling of my '29 Tudor when pulling up to a stop. I have performed all the standard tests and remedies including checking ignition , fuel flow and removed and examined the carburetor to no avail. I finally bit the bullet and decided to carefully and methodically go over the Zenith carburetor. First step was examining all the passages. I used the paperclip trick forced down the passages after disassembly. The upper casting idle path was clogged. I poked and rotated the paperclip through each passage. The main, cap and compensator jets were too large and so I soldered them up and used the micrometer to select the appropriate size drill to match the original Ford dimensions. The long and short of it is I went for a drive tonight and the performance has been transformed. I can pull up to a sharp stop when cold or warm with out a stutter of a problem. Lots of power and she idles smoothly at very low revs. Conclusion? Patience and perseverance. And don't give up on the Zenith!