>Can anyone help me out. I am restoring a 72 MGB myself. The engine runs
>rough, and lacks power at low RPM's. I have timed it, and adjusted the dual
>SU carbs. It seems not to be firing in cylinders #1&2. I can remove the
>plug wires with little or no effect to engine idle. If I do this with
>cylinders #3&4 the engine will die. I know the plugs are getting juice,
>because if I unplug the plug wires and put in a spack plug, the plug fires
>when the car is turned over. Can you give me some hint...
The fact that the problem seems to be in 1 and 2 leads me to believe that
you still have a problem in the left carb. Does this carb respond when
you try to adjust it? Are the plugs in 1&2 getting wet? Have you done a
compression test to see if there is some valve or head gasket trouble?
I would head in that direction...
Good luck,
John Van Valkenburgh
Raleigh, NC
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