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Automotive Forums > MG > MGB - Ignition question
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Old 03-02-2008, 11:11 PM   #1
NativeTexan2
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Join Date: Mar 2008
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Ignition question

I've got an 80B with the CEI distributor and can not get a spark to the plugs. I installed new cap, rotor and wires but still get no spark from coil. I tested the coil by putting a test lamp to the + side of the coil with the ignition on and got power. Next I put the test lamp on - side and cranked the engine. All I got was a steady light, no blinking light which I think means that the coil is not switching. I opened up the amplifer and had the module tested and it is good. My multitester shows 0.00 ohms from + side to - side and only 4.5 from center of coil to + side. I'm thinking the coil is bad. Anyone have any other ideas. Thanks
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Old 03-03-2008, 05:24 AM   #2
Flash75
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Join Date: Aug 2004
Posts: 725
Re: Ignition question

If you have the original type coil it should have around 1.5 ohms between the + and - terminals. There should be several K ohms from the center terminal to the side terminals. If you have a meter that is capable of reading accurate low resistance readings and you are sure of the readings it sounds like your coil may be bad.

Clifton
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