I've posted a lot about driveabilty issues with my '67 230S, 4-speed. My mechanic installed a Pertronix Igniter and coil, did valve adjustment, new NGK plugs, new copper plug wires and plug caps from M-B Classic. New fuel pump, filter, gas tank too. Then we got so frustrated with the Zeniths, we tossed those for a Weber set up.
The stumble still persists. Mind you, the car runs 100% better then it did before we started but it is this little burp between 1,900 and 2,100 rpms that bugs the hell out of me. BTW, it doesn't occur with a heavy throttle, just a lighter or normal acceleration.
So now my mechanic thinks it's ignition. The only thing we haven't changed is the distributor. Could a worn out one cause something like is? Or is the Igniter the issue? Should I try a different electronic ignition? Or is it something simple like futzing with the timing?
