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Old 03-27-2013, 04:04 AM   #2 (permalink)
wmjinman
Master EcoModder
 
Join Date: Oct 2012
Location: Carson City, Nevada
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Jimmy - '00 GMC Jimmy SLT
90 day: 21.18 mpg (US)

The White Gnat - '99 Suzuki Swift
Team Suzuki
90 day: 51.87 mpg (US)
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I'm not the knowledgeable, experienced mechanic by any stretch of the imagination, so this is just idle brainstorming because I like your thinking.

First, I guess you'd want to be killing the injectors instead of the spark - otherwise you'd be pumping raw fuel through the engine & out the exhaust.

Second, I kinda doubt it would even keep running on only one cylinder. When my 4-cylinder Swift had 2 dead cylinders, it barely ran - and when the mechanic pulled the power to the injector to either of the "live" cylinders, it would die almost immediately.

Third, I suspect you'd have to figure out some way to hold the valves open on the deactivated cylinders, or else the one remaining running cylinder would just be powering 3 "air compressors" doing nothing but sapping a bunch of energy. It's far beyond me to even imagine how the valve holding open thing would work, but I think the cars that actually can deactivate cylinders do something like that.
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