Re: Don’s 1937 (120) 138CD Deluxe Touring Limo

Posted by Don B On 2024/4/23 18:46:40

Carburetor update for today….I made several iterations of adjusting the float. By the time I adjusted it enough to make a noticeable improvement with the overflow, the car would stall just above 35mph. So, too far. In the end, I ended up right where I started, at a level where the car runs great, but I have about the same “overflow” that I had before.

But, I did learn some things, so it was still productive, overall. I had previously never done anything with a carburetor, so now I know how to remove and replace the float and rebuilding the carburetor myself won’t be quite so daunting.

I believe I have also proven that the primary problem is too much pressure building in the line between the fuel pump and carburetor. It’s good while the car is running and for a short time after shutting the car off. The pressure increases just enough after it is shut off due to temperature rise to cause fuel to be pushed into the carburetor and over flow.

The issue now is, what is the logical next step to solve this problem? All thoughts and ideas are appreciated!