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 - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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