My new (to me) 73 240z behaves badly at idle and low speeds. It feels like a plug or two is fouled and missing. However, when I put my foot in it, things get better as if the fouled plugs clear themselves. Checks on the ignition system appear to show that things are normal, and there's no signs of obvious fouling on the plugs. So, I begin to wonder if it's carburation. Details: 1973 240Z, Automatic. Dual point distributor, Dual 32/36 Weber DGVs, EGR intact but air pump belt is off. It's been a number of years since I did serious engine work and I seem to have forgotten my diagnosis skills. Point me in the right direction? Thanks, -Jim Kirkpatrick Walnut Creek, CA