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Dyna s problem
- DFIGPZ
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1984 750 Turbo
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- Old Man Rock
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Did you check/clean/confirm continuity/measure the quick connects from the Dyna plate to the coils....?
Did you perform the static test with an auto light (+12Vdc probe) verifying if it is indeed the Dyna ignition pickups...?
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- holmes
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1979 kz650 c3
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- bountyhunter
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Purely based on posts read, I see a lot of threads about dead Dynas and never read even one about a Kawi factory electronic ignition failing. The stock ones are not as fancy, but appear to be more reliable.holmes wrote: okay, thanks for all the help guys, im gonna borrow a voltage tester and test according to dynas module test method. if it turns out that this is the problem should i just replace? or is there a better option? i dont want to go back to points though lol.
Not sure if there is kawi electronic that fits your engine, worth a look.
1979 KZ-750 Twin
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- Old Man Rock
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Could be a simple connection, faulty conductor, coil termination at fault etc...
If finding it is a bad pickup, you could try and find a used Dyna ignition and swap sensors but me, Naw, replace all with new ignition plate. If one went bad for what ever reason, why gamble with another used & extremely important component.
Just my 2 crapsense....
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- z1kzonly
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I did not see it for a couple of days, it was in my spam folder.
But here it is, just what I was hoping for:
Hello Martin.
The Dyna-S can be tested using an ohmeter that has an audible sound function
when set in the ohm test mode.
The black meter lead will attach to the Dyna-S plate. The red lead will attach
to the red Dyna-S wire and should have continuity. The white and then black
wires should both read open, or have no continuity. If it passes these tests,
it should be fine.
If you prefer, we are happy to test them for you at no charge. Please forward
your full name, address and telephone number so an RA number can be assigned.
Once this information is received, we will provide the RA number along with
shipping instructions. Please note that you will be responsible for returning
these units to us. We will test for free and pay the return shipping charge.
Thank you,
Larry Nelson
Technical Support
Dynatek
1-800-928-DYNA (3962)
Nice initial info, and if I send them to them, they will pay the return shipping!
I will do the check 1st. I have an audible multi tester.
Livin in "CheektaVegas, NY
Went thru 25 of these in 40 yrs.
I SOLD OUT! THE KAW BARN IS EMPTY.
More room for The Old Girl, Harley 75 FLH Electra Glide,
Old faithful! Points ign. Bendix Orig. carb.
Starts everytime!
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- baldy110
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bountyhunter wrote:
Purely based on posts read, I see a lot of threads about dead Dynas and never read even one about a Kawi factory electronic ignition failing. The stock ones are not as fancy, but appear to be more reliable.holmes wrote: okay, thanks for all the help guys, im gonna borrow a voltage tester and test according to dynas module test method. if it turns out that this is the problem should i just replace? or is there a better option? i dont want to go back to points though lol.
Not sure if there is kawi electronic that fits your engine, worth a look.
I have blown several Factory modules, that is the reason I switched to a Dyna S. The Dyna S ignition is very reliable and cost effective. The only time I have blown up a Dyna is when I was doing a compression test and had not grounded out the coil leads. That will blow a module but that was my fault not the Duna S. I have had two factory pickup coils fail suddenly while riding the bike. I have also had a factory IC ignitor fail while riding. I do not trust 30+ year old electronics.
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- MFolks
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home.comcast.net/~loudgpz/GPZweb/Ignition/GPZgmHEImod.html
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- Jeff.Saunders
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They are susceptible to both high and low voltage.
- A failed regulator/rectifier will fry them., You can be pushing 18v or more through them... This is an easy test with a test meter across the battery terminals with the bike running. As you bring the RPM up, the voltage should cap around 14v
- Weak voltage at the ignition can hurt. Check the voltage at the coils to see if you have at least 11.5v.
- A bad battery can cause them to fail as well. They need a certain amount of voltage to fully charge components inside the modules - and if it's insufficient, they can overheat.
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- homert1
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Hope this helps
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- holmes
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and by the way jeff, i have had a bad regulator and bad battery in the last year.
im still working on getting ahold of a decent volt/ohmeter so i can do more complete testing
1979 kz650 c3
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- Jeff.Saunders
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The low voltage at the coil is also key. If you don't have enough voltage reaching the coils and ignition, you won't get an effective spark.
That test is an easy one too. Check across your battery terminals, and a good battery will show better than 12.5v. Put the positive probe in the yellow/red feed to the coils (the double female connector under the tank that's the switched power feed to the coils) and put the other probe on the battery negative terminal. Turn the ignition on and the kill switch to run. You need to see 11v+ - ideally over 11.5v. If you don't, the bike will run rough. You need to clean all the connectors in the harness. The connector blocks and individual bullet connectors. The contacts inside the ignition switch are kill switch are more difficult to clean effectively - although sometimes just sweeping the key and knob from side to side will help clean the contacts. I've had bikes showing under 10v at the coils.
As a last resort there's coil relay modification (do search on forum for this) - I don't like this particularly as it's a Band-Aid rather than a fix - but it can help.
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