Quote:
Originally Posted by AngryPirate
It runs like ****, when I can even get it running. When it does run, the vacuum advance runs the RPMs up super high. I adjust the dist to lower the rpm but it seems to be slightly misfiring. All other vacuum ports are plugged.
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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 beleive 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.