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1981Gs 650 no spark at 1 and 4

  • Thread starter Thread starter Aaron12345
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Aaron12345

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Hey there, my 650 gs has no spark on 1 and 4, 2 and 3 are fine, I switch wires on the coils and the problem changes to 2 and 3 igniter unit seems to be ok, could the Cdi box cause this? Thank you?
 
Sure sounds like an ignitor problem - is this a chain drive 650 "E" or a shafty "G" ?
 
If you switch the plug wires and the fault changes to the other plugs, seems to me that it is the coil that is the fault.

V
 
I switch the wires on the coils themselves and the problem moves to the other coil..... it?s. Shaft drive
 
We did some tests and I really think it?s the igniter box, Suzuki says it?s unavailable any ideas?
 
Could be the 4 way electrical connector plug (runs from ignitor to ignition coils) located under seat - inspect it for damage/corrosion.

Edit: this particular ignitor is very durable. A used unit would have a excellent chance of being ok. Years ago, I tested 4 on my bike and all worked perfectly.
 
Last edited:
Did all the tests as per my shop manual, wiring is good, signal generator is good so I?m going to get a new igniter box, I recently had trouble with my voltage regulator not putting out, I read on another thread that this can cause igniter failure has anyone heard of this?
 
Aaron12345;2496415....... I recently had trouble with my voltage regulator not putting out said:
If the voltage regulator is no good, it can let system voltage rise over 16 volts - this is bad news for electronic ignitors. I sold an used ignitor to a florida guy who had this issue and I insisted that he get a decent r/r to keep it company.
 
I?ve been trying to find a used or new igniter without much luck.... anyone on here know where I can get one? I live in Canada
 
Thank you, mine was under charging very weird, but it may have overcharged at some point as well, do you know of any used ones available? I can?t find anything online Nippon denso 32900-34210 thank you
 
Any cycle junkyards around you? You might get lucky
You can upgrade to a dyna setup like this link....the 650 is not listed,cuz you need to make cutout in dyna plate to clear oil pressure sender -many members have done this on 650 and 450 bikes.

https://www.ebay.com/itm/Dynatek-Dy...085401&hash=item58ef8bd5f1:g:c2YAAOSw4UtWTlvY

As an alternative, I will sell you one of my two spare used ignitors for $65 plus shipping - tested/run on my bike 6 years ago. I have no idea what shipping costs would be. I am not an ebay seller - I sell locally (mostly) on CL.
PM me if this interests you.
 
Awesome, so that dyna setup gets rid of the igniter box all together? I will buy one for sure from you, email me jeune_19@hotmail.com and we can work out the details thank you so much, I’ve contacted a lot of cycle junkyards around me and no one has any....
 
Also I would like to replace coils with new ones for reliability, is there any particular aftermarket ones that work better, going with the dyna s ignition system
 
Also I would like to replace coils with new ones for reliability, is there any particular aftermarket ones that work better, going with the dyna s ignition system
In that case, you should opt for the 3ohm dyna ignition coils to go with the dynaS ignition ...lots of dynatech suppliers, must be a canadian one with good pricing. Something like this from that same ebay guy..

https://www.ebay.com/itm/Dyna-S-Ele...Suzuki&hash=item53f649b3de:g:x6kAAOxybqpRiDJL

In your case, I'd skip the used ignitor from me and go for the whole new dynatech setup
 
Yes, sounds like the best way to go, I just want reliability! I ordered the whole setup on eBay maybe get a ride or two in before winter sets in! Thank you so much for your help! I love this old bike, I want to keep her going, I get more thumbs up than my friends with newer bikes lol! Thanks again
 
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