On those old IDI's, (if it still works) there is a fast idle solenoid and cold timing advance on the injector pump to help cold starts. With key on waiting for glow plugs, tap and release the throttle before starting. The solenoid can't open the throttle but it can hold it, that's the only reason why you tap the throttle. The high idle is only a few hundred RPM or around 1000 RPM, and it will shut off and return to regular idle automatically around 112*F coolant temp.
Most people never knew about this feature, and the solenoid can get sticky from never being used. If it doesn't work, sometimes you can spray a little wd40 on it and move the plunger in/out a few times. These features are not required for cold starts, but they do help starting and maintaining a smooth idle when cold.
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Today's Featured Article - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
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