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Mystery no-start situation - Help! 27 Jul 2021 13:49 #852640

  • gd4now
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Not sure if this will be of any more help or not, but you might want to read the 60/40 test from the link below.  

www.motorcycleproject.com/text/the_60-40_rule.html
1977 KZ650 B1
Pods and Denco header


This is my Z

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Mystery no-start situation - Help! 27 Jul 2021 15:03 #852646

  • slmjim+Z1BEBE
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That it won't fire with ether is telling.

Is full battery voltage at the coils?  The internal contacts on old ignition switches can cause fairly severe voltage drop.

Maybe try attaching a timing light & cranking while observing the timing mark(s) on the advancer to make sure spark is happening when it's s'posed to.

Good Ridin'
slmjim & Z1BEBE
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A Rider looks at your odometer and tags.

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1974 Z1-A x2
1975 Z1-B x2
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Mystery no-start situation - Help! 28 Jul 2021 21:45 #852761

  • jekyllman
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So I was able to get some life back into it. Just fitted the plugs and wires a little better. Still barely runs with JUST the right amount of choke and throttle. Definitely dies the minute I let off the throttle.

I took a video of the points while turning over the engine. Thoughts on the different seen between the two points contacts?



 

IMG_6651.MOV

 
1980 KZ650F1 - 10k miles (see photo)
1981 KZ305 CSR - 10k miles (didn't have the heart to customize this one, will stay original)
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Mystery no-start situation - Help! 29 Jul 2021 09:24 #852776

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Better video:

imgur.com/a/JYsGV69
1980 KZ650F1 - 10k miles (see photo)
1981 KZ305 CSR - 10k miles (didn't have the heart to customize this one, will stay original)

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Mystery no-start situation - Help! 29 Jul 2021 10:04 #852779

  • Rick H.
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I am no expert in this area, but that spark coming from the front(?) set of points isn't right.  In fact it's way bad.  That much spark coming off theose points will definitely damage them.  Have you done anything with the ignition circuit at all such as replace points and condensers?  The point sets appear to look different to me but I can't tell for sure.  I used to see a little bit of intermittent spark off the points, before installing the Dyna setup, but it was very small and hard to see.  

Rick H.
Rick H.

1977 Kawasaki KZ-1000A1

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Mystery no-start situation - Help! 29 Jul 2021 11:18 #852783

  • Mikaw
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Condenser is bad, or the points face are flashed. You can try to resurface the points and reset gap, but I’m thinking the condenser is bad
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
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Last edit: by Mikaw. Reason: Spelling

Mystery no-start situation - Help! 29 Jul 2021 13:31 #852791

  • F64
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It may not be an issue but in the video your points plate is out of adjustment range.
It's not centered in the slots.
You may have compensated for it with individual points adjustments.
You might double check you are firing on the  "F" mark not the "T" mark.
 
81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY

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Mystery no-start situation - Help! 29 Jul 2021 13:35 #852792

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That's kind of my thought too Matt, but looking at the points leads me to think they need to be replaced.  The right side looks really corroded but there's so much spark flash I can't get a good look at the left.  I don't think I have ever seen a set of points with this much spark flash.  Wouldn't want to get my fingers close to it.

Rick H.
Rick H.

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Mystery no-start situation - Help! 29 Jul 2021 13:43 #852793

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The condensor keeps that sparking down, but wondering if  those are Kawasaki condensors.
The OEMs are much better just not cheap. They're about $35 on ebay..not bad.
Get the oem points as well.

Funny, I'm reading a book that may have the same issue as you have.
From: Lone Rider by Elspeth Beard
 

 
81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY
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Mystery no-start situation - Help! 10 Aug 2021 11:28 #853516

  • jekyllman
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New condensers and we're golden!! Finally! Thanks everyone for you help on this. I probably wouldn't have figured this one out.
 
1980 KZ650F1 - 10k miles (see photo)
1981 KZ305 CSR - 10k miles (didn't have the heart to customize this one, will stay original)
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Mystery no-start situation - Help! 10 Aug 2021 15:21 #853533

  • Robb2018
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The condensor keeps that sparking down, but wondering if  those are Kawasaki condensors.
The OEMs are much better just not cheap. They're about $35 on ebay..not bad.
Get the oem points as well.

Funny, I'm reading a book that may have the same issue as you have.
From: Lone Rider by Elspeth Beard
 

 
 

So don't leave us hanging... what did the hotel manager want?
KZ900, Z1A
The following user(s) said Thank You: tdogm6@yahoo.com

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