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Suzuki gs 400 no spark

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Jay2903
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Joined: 03 May 2016
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PostPosted: 16:55 - 31 May 2017    Post subject: Suzuki gs 400 no spark Reply with quote
hey guys
I've been trying to get this started for a while. It turns over now but has no spark. I have a gs400 manual but it hasn't got the correct wiring diagram in it for cdi ignition.

Where should i start trying to get a spark ?
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Jay2903
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Joined: 03 May 2016
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PostPosted: 17:32 - 31 May 2017    Post subject: Reply with quote
here's the link of the previous post
https://www.bikechatforums.com/viewtopic.php?t=319499

How its wired up now.
https://drive.google.com/file/d/0B2cxcIsFzyGReDFTZG1jSnNhYUk/view?usp=sharing
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Paddy Blake
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Joined: 29 Jun 2006
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PostPosted: 21:05 - 31 May 2017    Post subject: Reply with quote
I take it have a multimeter.
You start at the plugs and work your way back after you checked fuses.
Just because there's tow plugs don't assume there fine,put them in a HT lead of the GT550 and check.

I take it that it doesn't have a kill switch.?

I can't see wiring diagram you posted.
Here is a link that is a sticky in this part of BCF that could help you a lot .

https://www.bikechatforums.com/viewtopic.php?t=33116
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Jay2903
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Joined: 03 May 2016
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PostPosted: 01:15 - 01 Jun 2017    Post subject: Reply with quote
Paddy Blake wrote:
I take it have a multimeter.
You start at the plugs and work your way back after you checked fuses.
Just because there's tow plugs don't assume there fine,put them in a HT lead of the GT550 and check.

I take it that it doesn't have a kill switch.?

I can't see wiring diagram you posted.
Here is a link that is a sticky in this part of BCF that could help you a lot .

https://www.bikechatforums.com/viewtopic.php?t=33116


It does have a kill switch and the plugs are working. Theres only one fuse.
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Jay2903
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Joined: 03 May 2016
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PostPosted: 02:33 - 01 Jun 2017    Post subject: Reply with quote
Paddy Blake wrote:
I take it have a multimeter.
You start at the plugs and work your way back after you checked fuses.


One thing I noticed, when the ignition is on
Theres voltage on the - side of the left coil but nothing on the + side.

On the right ignition coil there is voltage on both - and +

Is this a fault ?
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Jay2903
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Joined: 03 May 2016
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PostPosted: 11:50 - 01 Jun 2017    Post subject: Reply with quote
https://s61.photobucket.com/user/Jay29031/media/IMG_3027_zpsws7xpbui.jpg.html?sort=3&o=0
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Jay2903
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Joined: 03 May 2016
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PostPosted: 07:15 - 02 Jun 2017    Post subject: Reply with quote
Paddy Blake wrote:
I take it have a multimeter.
You start at the plugs and work your way back after you checked fuses.

I think i've ruled out the pick up coils and rectifier now.
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Jay2903
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Joined: 03 May 2016
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PostPosted: 13:01 - 02 Jun 2017    Post subject: Reply with quote
so ive got a spark tester now. It lights up for a second when i hit the starter button but no constant spark when it turns over.
Any ideas ?
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