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18 HP Vanguard no spark....wiring issue?


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#1 Diesel1050 ONLINE  

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Posted July 02, 2016 - 07:57 PM

Have a low hour 18 twin Vanguard out of a White GT-1855 in my Bolens H-16. Got the wiring swapped over, (It ran great in the White!), and now it has ZERO spark! Has two coils, neither has spark all of a sudden. Could it be wired incorrectly? It has a six-post keyswitch, with 5 taken up by the main plug, and 1 left over. There is a pair of yellow wires, (That go into same connector). One runs to the coil ground diverter thingy, and the other best as I can tell runs to a now bypassed (Looped) safety. I went to connect this to the last availble post, with the key on, and second it touched it sparked and shocked the hell out of me! What am I doing wrong???? Also, I read something about diodes going bad?

Edited by Diesel1050, July 02, 2016 - 08:21 PM.


#2 glgrumpy OFFLINE  

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Posted July 03, 2016 - 09:03 AM

Lots of little things need to be hooked up right on these new engines. How about oil sender sensor and a wire for that?  Carb fuel shut-off selinoid?  Did other tractor have a little black box in circuits?  Seems there is a spark control relay there too if I recall, maybe thinking Kohler on that, not sure. All these little sensors have to get correct signals and relay together or to a puter box to make correct circuits to run.  I would find electical diagram from the white and compare to yours and see if things needed or can be bypassed to run.



#3 Diesel1050 ONLINE  

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Posted July 03, 2016 - 11:27 AM

Fuel shutoff is fine, no oil shutoff.

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#4 jms180 OFFLINE  

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Posted July 03, 2016 - 12:36 PM

I would remove the kill wire from the coils and check for spark.






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