KZ440 Ignition issues

  • WokkaBuggyBuilder
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20 Dec 2023 12:54 #892945 by WokkaBuggyBuilder
KZ440 Ignition issues was created by WokkaBuggyBuilder
I have KZ440 engine that I'm putting on a buggy, and it's got no spark. I went through this whole ordeal and almost gave up trying to get a spark advancer, it ended up being one for one with points, so I got the points stuff too. I hooked the ignition coil up to the points and there is no spark, I have no wiring harness but I'm trying to just do it all as simple as possible. Does the ignition coil need to be connected to anything else to produce a spark?

It'll be fine...?

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20 Dec 2023 13:23 #892946 by TexasKZ
Replied by TexasKZ on topic KZ440 Ignition issues
Yes, it must have power. The coil grounds through the points. 

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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20 Dec 2023 13:27 #892947 by TexasKZ
Replied by TexasKZ on topic KZ440 Ignition issues
This link is to a long thread, but it likely has a minimalist electrical system diagram for your 440. If not, one for a 750 twin may work.

kzrider.com/forum/4-electrical/172746-19...r-mattylight?start=0

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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20 Dec 2023 18:11 #892958 by WokkaBuggyBuilder
Replied by WokkaBuggyBuilder on topic KZ440 Ignition issues
I just figured out that I have no spark at the points, either. What can cause this?
 

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20 Dec 2023 18:41 #892959 by daveo
Replied by daveo on topic KZ440 Ignition issues
STOP!!!

Before grabbing any tools, it might help to have a beer in one hand and a FSM (factory service manual) in the other...


1982 KZ1100-A2

The following user(s) said Thank You: Street Fighter LTD, sf4t7

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20 Dec 2023 21:09 #892963 by TexasKZ
Replied by TexasKZ on topic KZ440 Ignition issues
If the coil has no power, the points will have no power.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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20 Dec 2023 21:35 #892966 by TexasKZ
Replied by TexasKZ on topic KZ440 Ignition issues
Here s a diagram for a KZ400 where he headlight and tailight are controlled by the oil pressure switch.

 

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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20 Dec 2023 21:44 #892967 by TexasKZ
Replied by TexasKZ on topic KZ440 Ignition issues
Here is one for a 440.


 

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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21 Dec 2023 09:48 #892986 by WokkaBuggyBuilder
Replied by WokkaBuggyBuilder on topic KZ440 Ignition issues
If there is no power to the ignition coil then no power to the points? The points are before the ignition coil so I don't get it
Does the low oil pressure switch cut off the spark? I don't have the low oil pressure switch hooked up to anything
 

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  • gd4now
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21 Dec 2023 10:14 #892987 by gd4now
Replied by gd4now on topic KZ440 Ignition issues
As others have indicated there needs to be 12 volt DC to the coil without it there will be no spark.  Not sue if this will help you or not but take a look at these.

1977 KZ650 B1
Pods and Denco header


OLD KAW OWNERS SMILE ALOT

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21 Dec 2023 10:28 #892988 by Wookie58
Replied by Wookie58 on topic KZ440 Ignition issues

If there is no power to the ignition coil then no power to the points? The points are before the ignition coil so I don't get it
Does the low oil pressure switch cut off the spark? I don't have the low oil pressure switch hooked up to anything

 
The coil should have a constant ign live + (from the kill switch)
The points switch the ground side of the coil -
The condenser's function is to reduce "arcing" at the points during switching
The spark is generated when the points open and break the ground (as the magnetic field collapses the HT voltage is induced in the secondary winding)
The oil pressure light has an ignition live (+) to one side and the ground is switched by the oil pressure switch (no link to ignition operation)

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21 Dec 2023 12:33 - 22 Dec 2023 09:35 #892991 by WokkaBuggyBuilder
Replied by WokkaBuggyBuilder on topic KZ440 Ignition issues
Just making sure you 100% know my situation and set up right now. 
I don't even have an ignition switch or starter relay on it right now, I just turn it over with a big cable. Is this how it's supposed to be wired as simple as possible? Can you spot anything that would eliminate spark? I mean seriously, I don't even have a loom, or fuses yet. Low oil pressure is not hooked up to anything. The color brown on the rectifier is the only one that was different from the wiring diagram I was using, so I ignored it and hooked it up in the orientation it was on the diagram regardless of color. See the picture
 

It'll be fine...?
Last edit: 22 Dec 2023 09:35 by Street Fighter LTD.

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