Morris
Yoda
Offline
I have a bouncing vacuum needle through out the range on my car. I have explored every possible cause extensively, and I am still stumped as to what is causing the problem. When I had the head rebuilt, I had the machinist shave off .05" (if I remember correctly). I bought new valve springs, but they are stock spec. Could it be that stock springs are not strong enough to seal my combustion chamber given the mods I have made?