Quote:
Originally Posted by James
We need to make sure your carburetor is setup correctly.
First, do not connect the manifold vacuum to the distributor, keep the port plugged.
Second, Start the engine and set the fuel level. The level should be to the bottom of the hole (remove the plug on the right side of the carburetor fuel bowl to do this). If it is not correct, loosen the screw on top of the bowl and turn the nut under it. Clockwise turning the nut (be sure to hold the screw still once it is loosen, don't turn the screw while turning the nut) will lower the fuel level and counter-clockwise will raise the fuel level. Once the level is set then tighten the screw while holding the nut still. After it is set reinstall the plug on the right side of the fuel bowl.
Set your distributor, idle speed, and idle mixture. I believe the Stromberg carburetor provide ported vacuum to the distributor (I don't remember for sure). I can take a look at my old Stromberg carburetor later to make sure.
If you connect manifold vacuum to the distributor it will run too fast at idle and you might not be able to idle it down. I had modified my carburetor base plate and gasket to allow using the port vacuum like the Holley 4150/4160 carburetors, it has a fitting coming out of the right side of the metering block. The vacuum fitting on the back of the carburetor is manifold vacuum. The fitting below the choke I think it does nothing (I could be wrong on this part).
The other guys on this forum could have some other answers that might also help you.
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"remove the plug on the right side of the carburetor fuel bowl to do this" - I'm guessing you meant the passenger side of the vehicle?
"fitting below the choke I think it does nothing" - I believe the documentation said the one below the choke is meant for timed ignition vacuum. See diagram of carb attached. Perhaps I need to use full manifold vacuum?
You're suggestion about the float level seems like a great starting point since it's the only place I hadn't yet explored. I assumed the factory setting would be reasonable but I am ignorant and it seems I should check this.
My Stromberg WW2 had a vacuum port on the back.
Thanks a bunch!