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Proper driving method

Fuel System

Vehicle Information: Model: 911E; Year: 1969; Body Type: Targa; Engine (type, size, modifications): 2.0 MFI stock; Total Mileage: 98K kilometers (likely 198K);

Hello Ed,A few days ago I decided to get the car out and drive it to work. (Its not a daily driver, but I try to drive it every couple of weeksin the winter, at least once a week in the summer.) The temperature was in the low 20's so I let the car idle for a few minutes before to warm it up before driving off. After a few blocks, the car started missing and continued to miss all the way to work (a ten minute drive in traffic). After sitting for about 9 hours, it ran much better on the way home. I didn't let it warm up; the temperature was in the low 40's and I drove off as soon as it would continue to run with the hand throttle off. Is it possible one or more plugs were fouled by fuel while idling in the cold? What is the best procedure for driving a cold car? For that matter, what is the method for driving the car after it has warmed up? Should I always keep it above 3000 rpm? 3500? (Once the engine warm, I experience the light-to-mid throttle "lean surge" between 2000 and 3000 rpm, if I want the car to really run right, I step on the gas). What is the proper method for driving this car?

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