I had both carbs, Carter WCFB, rebuilt. After driving 40 miles engine idles way too fast. I got it in the garage and pulled the air cleaner. The rear choke was 'flapping in the breeze' and the front choke was almost closed. Both choke housings were warm, not hot, and the tubes were somewhat warm.
My 56 shop manual does not show what these choke thermostats look like internally or how they hook up.
Does anyone have piotures of the internals of these chokes?
I have been told they are different from the later Carter chokes.
Thank you.
Larry,
See if this helps. It's '57 but typical of '55-56. The choke interior appears to be the typical bi-metal spring. Based on a "warm" choke tube coming up from the exhaust manifold, I'd start by checking that the chimney tube is clear. Next I'd check whether the choke butterfly is attached to the shaft.
Thanks Ralph. The picture does help.
I checked the engine this afternoon after sitting overnight. Both chokes are closed with good spring tension closing them. Strange the rear one was just totally loose and the front one was almost closed after 40 miles.
It may be a while but I will let all know what I found.
Make sure you have good vacuum at the port on the choke housing that the manifold heat tubes connect to, this can be an issue if the internal pasages get carboned up. The thermostatic spring never gets warm enough to open the choke plate.
Yes, I will check the vacuum as mentioned. I already know the heat tubes are clear.
Another question....what holds the chokes open when the choke stats bakc off when they get hot?
I will keep you posted.
It sounds like it might be as simple as the front choke is adjusted way too closed. So even when the engine warmed up (and the choke warmed up), it never opened. The rear one sounds like it functions as it should. Try adjusting the choke towards being more open...
After reading the shop manual many times again, I discovered the choke stats were incorrectly set. I reset the stats per the book then I went to work readjusting the linkages on the driver side.
My hot rod neighbor came over last night and we started the engine. The chokes work perfectly and he fine tuned the linkage adjustment on the driver side.
She now idles down slow. My neighbor will come back in a couple of days and we will check timing and do a final adjustment on the carb mixture and idle settings.
Now I need to locate a new gasket for the gas gauge sending unit. Any ideas where I could find one of those?
Thanks, Larry