MG MGB and MGB GT Tech Talk
After several long weeks (almost three months!) I finally got my 78 B to run again. I've had about 8 B's with zeniths and never had this much trouble. However, thanks to Tom and John for their suggestions and encouragements. I know zilch about webers, but with this web site I was able to figure enough to get it running. Now, I just need to figure out why there are two adjustement screws and I'm all set!
Know what? I don't know why there are two. I fiddled with one, the idle smoothed out, and I just said to hell with the other one and have never touched it.
Go ahead, jump on me Tom. I'm suppose to be one of the red hot Weber experts and I don't even know what that little screw is for. What's worse is I don't give a damn as long as both my cars that have them run as great as they do.
There is an idle speed screw and an idle mixture screw. The mixture screw is sort of hard to see. It's on the back towards the bottom.
If you are talking what appears to be a screw next to the vaccum line hook up. That is not a screw persay. It is a plug for a vaccum pull off at manifold pressure. The one next to it is venture pressure. When I install a weber I pulg the vaccum advance line off and set the timing for a maximum of 32 degrees and do not use the vaccum advance ojn the distributor.
