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 Post subject: WTB '74 H2 CDI
PostPosted: Thu Mar 05, 2020 6:37 pm 

Joined: Sat Oct 04, 2014 3:45 am
Posts: 796
Location: Cen Tex
My H2 isnt getting spark, plan to test it tommorow [its not at my home right now]

May need ignition boxes, do you have any?

Thanks

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 Post subject: Re: WTB '74 H2 CDI
PostPosted: Thu Mar 05, 2020 8:55 pm 
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Joined: Wed Jun 08, 2011 5:34 pm
Posts: 2785
Location: Front Royal, VA
Send it to our own Jim Hobbs here on the forum and he will make it better than new.
http://www.lakeserv.net/kaw/

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 Post subject: Re: WTB '74 H2 CDI
PostPosted: Fri Mar 06, 2020 8:42 am 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9840
Location: North Central NC
The procedure to test them is here:
http://kawatriple.com/cdih2/cditesth2.htm

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If it surges, that's normal, upshift.


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 Post subject: Re: WTB '74 H2 CDI
PostPosted: Fri Mar 06, 2020 9:31 am 

Joined: Sat Oct 04, 2014 3:45 am
Posts: 796
Location: Cen Tex
Tim Steele wrote:
Send it to our own Jim Hobbs here on the forum and he will make it better than new.
http://www.lakeserv.net/kaw/


Thanks for the tip
Jim wrote:
The procedure to test them is here:
http://kawatriple.com/cdih2/cditesth2.htm


Hi Jim...yes, found that last night and plan to do it today. The more I think about it, seems unlikely that all three would fail at same time, so it may be another issue? I'll be in touch if needing your services. Thanks!

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 Post subject: Re: WTB '74 H2 CDI
PostPosted: Fri Mar 06, 2020 9:56 am 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 9840
Location: North Central NC
Stev-o wrote:
The more I think about it, seems unlikely that all three would fail at same time, so it may be another issue?


Very true, except it's possible that the rectifier unit is causing the problem. Also, one failed CDI unit can cause the other good ones to stop working. You can test for this by unplugging the light green wires from the three CDI units one at a time. If you unplug one and spark returns to the other two you know what's going on.

The bench test will uncover this stuff too, of course.

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 Post subject: Re: WTB '74 H2 CDI
PostPosted: Sat Mar 07, 2020 2:34 pm 

Joined: Sat Oct 04, 2014 3:45 am
Posts: 796
Location: Cen Tex
Jim wrote:
Stev-o wrote:
The more I think about it, seems unlikely that all three would fail at same time, so it may be another issue?


Very true, except it's possible that the rectifier unit is causing the problem. Also, one failed CDI unit can cause the other good ones to stop working. You can test for this by unplugging the light green wires from the three CDI units one at a time. If you unplug one and spark returns to the other two you know what's going on.

The bench test will uncover this stuff too, of course.


Dodged a bullet, turns out it was just a loose connection. Embarrassed to say the bike has been sitting awhile [8 months?] and I now have a couple fuel related issues: the petcock is leaking and also the center carb.
Working on these and should have the bike running by mid-week.

Thanks guys...

Still interested in buying an entire CDI unit at a reasonable price, I will need one down the road for a project H2 that I have.

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 Post subject: Re: WTB '74 H2 CDI
PostPosted: Mon Apr 13, 2020 10:49 am 

Joined: Sat Oct 04, 2014 3:45 am
Posts: 796
Location: Cen Tex
Just a quik follow up, after cleaning the carbs, rebuilding the petcock and installing new fuel lines, the bike is back on the raod and running great! I hate ethanol fuel!



Image

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