Hi rtheriaque,
The carb is a Solex 36-40PDS. I had an idling issue of the car dying if it wasn’t warmed up and driven a bit. The car had sat in the garage for a few years. Here most gas stations have MTBE in their gas. That additive eats the rubber in fuel pumps and carbs.
I had my mechanic tell me the carb needed to be rebuilt. The rebuild shop wanted $960. bucks. I bought a gasket kit and rebuilt it in an hour. Then, as I said, it won’t idle unless the choke is out and nothing in the repair books I have say anything about how to the needle valve or the idle screw. So, I rebuilt the carb a second time.
Today, I took your advice and removed the needle screw, cleaned it and screwed it in until it seated. Then I backed it off 2 full turns. I set the idle set screw to barely touching and it started with the choke out. The rpm’s are much lower, like 1000 rpm’s. I set the idle set screw two turns tighter, to maybe 1500 rpm’s. When I started backing off the choke it dies.
I’ve sprayed starter fluid all around the intake and carb looking for a vacuum leak. If there is one it must be under the intake where it meets the head.
Any ideas?
Thank you.
Clay