[buck5ca]

In need of some help: I only have spark on rear cylinder , wasted $180 on a coil , wires are good plugs are good, HELP! 2007 Road King custom (96")

 

[kd5cqt]

Model? Year?

 

[buck5ca]

07 road king

 

[misinlink]

did you pull the codes?

 

[buck5ca]

not showing any , just the one for no combustion

 

[nipplesurfer]

Was the bike firing on one cylinder before you replaced the coil? Also, are you using an aftermarket ECM or fuel controller?

 

[SCHMIDTY]

How is spark being checked ?
The ECM needs to detect compression before it will trigger the coils correctly. Laying the plug on the head doesn't work. Need plugs screwed into the heads and a spark tester placed in series with the plugs.

 

[slingshot383]

Do a compression test to make sure you are getting some, you could have a stuck valve or to tight of valve lash on that cylinder.