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Author Topic: 79cb650 no spark  (Read 816 times)

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Offline cbdad78

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79cb650 no spark
« on: September 01, 2012, 03:41:19 PM »
I'm new to the forum, can anyone tell me how to find out why I have no spark.  I know the battery cables got crossed.  It blew the main fuse and I have to bypass the solenoid to get juice to the starter.  It turns over, but no spark.  Ignition switch has continuity as do the coils.  I changed the mps pulse ignitors and still nothing.  Please help!  :-\
« Last Edit: September 01, 2012, 04:40:40 PM by cbdad78 »
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Offline cb650

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Re: 79cb650 no spark
« Reply #1 on: September 02, 2012, 12:25:00 AM »
you have to have atleast one spark plug connected on each coil to get spark.
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18 grand and 18 miles dont make you a biker

Offline cbdad78

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Re: 79cb650 no spark
« Reply #2 on: September 02, 2012, 12:30:41 PM »
Thanks for the input.  It doesn't help no spark situation.
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Offline w1sa

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Re: 79cb650 no spark
« Reply #3 on: September 02, 2012, 11:03:07 PM »
The main fuse has to be installed and serviceable to allow battery power to flow to the ignition switch,  and on to the coils for spark/ignition. Continuity is necessary to carry the voltage thru the circuit.....the main fuse (or a fuse bridge) is a necessary part of the switched 12v circuit continuity.

If the main fuse is serviceable/installed, you should get switched (key On) 12v thru to the black/white terminal at the coils (and the Spark Units for switching coils on/off via the pulse generators)...........can you confirm (key On) 12v at the coils?...........
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