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Thread Tools | Display Modes |
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#1
03-30-2025, 10:30 AM
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No spark k301a
I have no spark out of coil
I have good resistance 4.5k across primary 8.2k across secondary I have 12v to coil from switch and have even tried jumping it right to battery I have signal from points to coil Condenser is grounded and seems fine I ohm spark plug wire and it is good , but also I get nothing out of coil with test light on there Also I just got in new point, condenser and coil still no spark out of coil 
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#2
03-30-2025, 10:50 AM
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Sounds like your coil is bad.
You should have about 3 - 4 ohms across the primary not 4500 ohms (4.5K) If you attach a test light from the points side of the coil to ground and crank the unit, does the light flash, or is on steady, or off steady?
__________________
128 X 2, 129, 149, 1250, 1450 x 2
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#3
03-30-2025, 10:55 AM
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__________________
Richard 1979 IH Cub Cadet 782 w/CH20, dual hydraulics, power steering and Cat 0 three point
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#5
03-31-2025, 07:24 AM
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You troubleshoot electronic circuits by dividing them in half to narrow down your problem area.
In your case..., 1. Disconnect the points and condenser wire from the negative pole of the coil. 2. Connect a jumper wire to a GOOD ground on the engine or frame. 3. Turn on your key to the run position. 4. Quickly tap the loose end of your grounded jumper wire to the negative pole of the coil that you removed the points and condenser wires from. By quickly tapping the grounded jumper wire to the negative coil pole you are representing the points opening and closing. If you get a spark on your plug or test light, your trouble is leading towards your points or condenser. If no spark, trouble is from coil back to ignition. (or your plug or plug wire)
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