Question about 2000 Harley Davidson FLSTC Heritage Softail Classic

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Plugs will not fire. checked plugs on other engine and plugs are good. would it be the coil or some electrical fuse. 1999 heritage

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'99 Heritage. I think that was the last year of the Evolution engine in that model. If your plugs won't fire, check for voltage at the coil. If you don't have voltage, check for voltage at the "ignition" circuit breaker. Voltage for this circuit breaker comes straight from the switch. I think the circuit breakers are under the seat.

I have seen the coils go bad. Using an ohm meter, test the resistance of the primary of the coil. Remove the wires from the two small connections of the coil. Put the meter in "R x 1" scale and connect one lead from the meter to one post and the other lead from the meter to the other post. You should read about 3-5 ohms. Any more than that, the coil is bad.

If you do have voltage, it could be your sensor in the timing cover. There is a way to test it but you've got to have a special meter or your readings may not be correct.

If per chance your bike is a Twin Cam equipped bike, the engine has a compression sensor and the plugs will not fire if you take them out of the heads. Leave the plugs in the heads and test for spark using another set of plugs.

Posted on Nov 13, 2009

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Hello Momtexas1:

>>Remove the Spark Plugs and Wrap the Threaded Section of the Plug with Wire, then Attach the Other End of the Wire to the Engine Block.
>>**First Make Sure the Plastic End that Snaps to the Plug is Allowing Current to the Plug. Use a Test Light or Multimeter and Check for Fire Behind this Connector (through the Large Rubber like Coil Lead to Plug) for Fire to the Plug whenever there is No Fire to the Plug.**
>>Once you are Sure the Coil Lead and Ends to the Plug are Not the Reason for No Fire to the Plug, then with the Plug Still Wired to the Engine and the Coil Lead Attached to the Plug; Remove the Coil Shut Off Wire at the Shut Off Switch.
>>Check for Fire. If No Fire, then Remove the Cut Off Wire from the Coil (removal of the blower housing required) and Check for Fire.
>>If the Spark Plugs are Firing with the Plugs Out and Properly Grounded to the Engine, then Replace the Plugs and Start the Engine.
>>Using an Insulated Plug Wire Puller, Pull the Plug Wire from 1 Cylinder. If the Engine Continuse to Run, then Replace the Plug Wire and Disconnect the Other Plug Wire. If the Engine Quits, then Replace the Other Cylinders Coil.
Send me the Model and Type or Spec Numbers Off the Engine and the Mower Model Numbers, Please. With these I can Locate the Proper Manual and Better Assist you. The Engine Model Numbers May be Stamped Into the Blower Housing (metal engine cover) Above the Spark Plug. The Mower Model Numbers are Usually Located Under the Seat on a Sticker on the Body of the Mower.
>>Thanks.

Respectfully

John

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