2000 Fat Boy...no spark

[ritz]

Evening all - I'd appreciate some much needed guidance with diagnosing a 'no spark' issue I'm having with my bike. The engine cranks, fuel is present but no spark to either plug. Up to this point the bike had been progressively getting worse with the daily initial startup...10-15 seconds of cranking before it kicked over.

Here are the tests and results so far:

1) battery kicking out 13.16 V
2) 11.73 V making it to Terminal-B of the coil connector
3) resistence of front & rear plug wires (6.62K & 2.99K resp.) within factory spec (front: 4.75K-11.23K & rear: 1.812K-4.375K)
4) resistence of coil primary circuit is 1 ohm (factory: .5-.7)
5) resistence of coil 2ndry circuit is 5.86K (factory: 5.5K-7.5K)
6) test lamp on Terminal-A and -B of coil connector, with engine cranking gives NO light

I'm thinking that my next step would be investigating the crank position sensor but I do not have the tool (i.e., breakout box) to properly diagnose.

Am I missing something in my troubleshooting methods?

Thank you.

[SCHMIDTYS]

You can test the CKP without the breakout box . Find the CKP connector and measure the resistance between the pins , should be about 1000 ohms .
When you tested the coil A and C pins with your test light did you have the light clipped to the positive battery terminal not ground ?

[ritz]

Originally Posted by SCHMIDTYS

You can test the CKP without the breakout box . Find the CKP connector and measure the resistance between the pins , should be about 1000 ohms .
When you tested the coil A and C pins with your test light did you have the light clipped to the positive battery terminal not ground ?

Light clipped to positive terminal of battery.

[ritz]

Great news...the problem ended up being the crank position sensor. I'm up an running in preparation for Rolling Thunder. As a side note; In celebration of Memorial Day, let us not forget and honor those men and women who have made the ultimate sacrifice protecting our great Nation.

[Dave63]

Glad things worked out. Thanks for posting the results.