I have a 1998 fatboy and turns over fine but no start how can i rule out the coil or see if it is the ignition module

I would check to see if the spark plugs are fouled. Or you might have a bad ignition control module (mounted under the coil packs). Auto Zone can test the ignition control module.

Well you hit all the major ones, could be crank position sensor, ignition module, a bad coil pack (it should have 3), you need to check that you have spark to each plug while the engine is turning over (!!!be careful as this will hurt if you get shocked!!!), this will rule out coil packs. if you have no spark to any plug your looking at a bad ingnition module (which is what the coil packs bolt to). Hope this gets you on the right track!

Do not take the fuel cap of when trying to start the vehicle this will trigger a trouble code. The no start problem, sounds like the ignition module. Thats the thing that your coils are plugged into. The coils are the things that your plug wires are plugged into up by the fire wall. The ignition module looks like a silver plate about 6-8" long underneath the coil packs, (3 individual coils serving two cylinders each). Anyway have that checked out. Tip;- If you unplug the coils and put dielectric grease at each of the terminals, that might help, it's a first step to fixYa.

test or replace your ignition module,and you might find the actual prob by accident the connector for the module sometimes with age lose or only have intermittant contact.a can of electrical contact cleaner should take care of it but those symptoms scream ignition mod dont know why hd dealer couldnt find it but they dont put their best techs on older bikes

check the battery an make sure its holding a charge and test the alternator and checkout the starter to make sure its good and not drawing on the battery

Last week my 323 89' Mazda stop working as I was driving it in middle of the street, I pushed to the side. it would not start, the starter sounded ok, but the car just didnt start, I checked the fuses, gas pump, and all seemed to be ok, finally with the help of a friend we found out that the ignition rotor at the distributor wasnt working we then replace it with a new one from autozone , is about 5 dollars, now it works just fine, big problem easy solution.

Victor

Start with the battery and make sure u have at least 12.5 volts and good cable connections
1. Are the plugs fouled ?
2.Fuel filter clogged ?
3.Check all the (vacuum) lines for tight connection
4. Sparg plug cables, coil
5.Ignition timing, sensors

sounds like the coil