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Old 05-01-2012
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dual distibutors?

Im doing my plugs and wires today and i was thinking why do 4 cylnder ranges run a dual distibutor setup. i have owned two 4 banger rangers and they were both like that. i was thinking it might help get a more compleat combustion, but then why dont other cars have that setup.

thanks, CH
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Old 05-01-2012
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for emissions reasons. The newer ones have single coils and ford uses a waste spark system
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Old 05-01-2012
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^ Yup. my 06 4.0 is a waste system too.
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Old 05-01-2012
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waste spark?
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Old 05-01-2012
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Waste spark is where they set up the ignition to go through one plug wire (to cylinder #1, for example) while it is in the compression/power stroke and it also sends spark down the opposite plug wire (to cylinder #2, for example) while that cylinder is on the exhaust stroke. In other words, the spark plugs fire in pairs.

Here's a good read about the system found on many Fords.

http://rockledge.home.comcast.net/~r...y/DIS_EDIS.htm
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Old 05-01-2012
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My ’95 2.3L had 8 plugs, dual coil paks but I do not remember dual distributors.

If ran well and got great milage.
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