Accelerator pump was a minor issue in gas engine carb design. Also - several farm tractors DO indeed have them. Some Deere (3010, 3020, 4010, 4020, 500) tractors had them. My IH farm and industrial tractors them (B275 and 3414).
A properly working accelerator pump prevents lag when you hit the gas pedal by making up for what would otherwise be a lean situation. That happens because there is a time-lag in the venturi system when the throttle is open. It does not "wash cylinders off" as you describe. Not when working as designed.
Most cars that I had any experience with - when they changed from carbs to throttle-body fuel injection - went down in MPGs, not UP. So if anything, more fuel went unburned with the first TBI systems.
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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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