sparkydave
Jedi Knight
Offline
I've been trying to figure out why my Midget seems to do its best to run as rich as possible, despite finding John Twist's info on adjusting the Zenith Stromberg, but it still produces a distinct smell at the tailpipe. Following what I've managed to find, I have the idle air bypass closed, and I've got the main adjustment set so that when I lift the air piston, the idle speed stays constant briefly and starts falling. On the one hand I don't have to pass emissions, but on the other hand it stinks up my garage, and my pants if I happen to walk behind it. I haven't looked at the plugs to see if they indicate that it's really running rich, but is this just as good as the Zenith gets? The car seems to run fine otherwise. I've determined that there are no vacuum leaks, the carburetor was rebuilt about 2 years ago, and the valve and ignition timing are what they are supposed to be. The automatic choke works as it should, so it's not sticking on. The one thing I didn't do when I rebuilt the carburetor was replace the metering needle. Does this really erode that much that it needs routine replacement? As far as emissions gear, the catalytic converter is gone and the air pump belt is disconnected, but everything else is still present. Any thoughts?