I recently purchased a 1972 2002tii that has been driven very little the past 15 years. When I bought it, the car had recently gotten new plugs, plug wires, points and condenser, but that's about all, and it ran very badly, soundling like it's running on one or two cylinders. In fact at one point, while it was warming up, I pretty much caught it in the act -- pulling off three of the plug wires made no difference at all to the incredibly slow, rough idle, but pulling off the wire to cylinder #3 killed it entirely. Letting it idle more, it smoothed out, and repeating the test showed that I now had #2 and #3. Note that I verified that I had spark at all four cylinders.
I went back to basics, adjusted the warm-up regulator and the valves, verified that the regulator is working and extends upward (it is and it does), timed it at 8 degrees btdc at idle, and synchronized the pump with the throttle body, and there's very little change. It still idles very badly, but the yank the plug wires off test is not repeatable -- it seems like all four cylinders are firing. The car drives ok but not great -- no obvious surges or stumbles, just a loss of power.
I've verified that the fuel pump is working fine -- 30psi at the cold start valve, 60psi at the inlet banjo, and outputting the right amount of fuel in 15 seconds.
I stress that this car has been driven very little, so a gummed up pump or injectors are quite possible. Opinions on where to go from here?
--Rob