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Yamaha YBR 125 No spark

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Jan-Ivar
L Plate Warrior



Joined: 22 Sep 2018
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PostPosted: 12:56 - 22 Sep 2018    Post subject: Yamaha YBR 125 No spark Reply with quote

Trying to help my nephew with his 2006 YBR 125 that does not start.

So far have checked wiring harness fuses, relays and other shit.
Battery is new
Had to change the ignition lock due to damage.
i am a Trained Car tecnitian and have use all my skills to try and find the fault.
Measures resitanse in Crank Position sensor seams good.
have 12 volt to the ECU but cant measure any signal to coil.
tryed to cange the coil but did not help.

anyone that have did any major fault finding on a similar bike that have any good advice. Dont want to by an expensive ECU just to find out it was not the problem.
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Last edited by Jan-Ivar on 19:02 - 22 Sep 2018; edited 1 time in total
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Riejufixing
World Chat Champion



Joined: 24 Jun 2018
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PostPosted: 15:00 - 22 Sep 2018    Post subject: Reply with quote

"i am a Trained Car tecnitian and hav use all my skills to try and fund the fault. "

I had one of those but the wheels fell off.

If there's nothing going into the coil then it's not likely anything will be cpoming out, I'dve thought.
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Jan-Ivar
L Plate Warrior



Joined: 22 Sep 2018
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PostPosted: 23:56 - 12 Oct 2018    Post subject: Re: Yamaha YBR 125 No spark Reply with quote

Jan-Ivar wrote:
Trying to help my nephew with his 2006 YBR 125 that does not start.

So far have checked wiring harness fuses, relays and other shit.
Battery is new
Had to change the ignition lock due to damage.
i am a Trained Car tecnitian and have use all my skills to try and find the fault.
Measures resitanse in Crank Position sensor seams good.
have 12 volt to the ECU but cant measure any signal to coil.
tryed to cange the coil but did not help.

anyone that have did any major fault finding on a similar bike that have any good advice. Dont want to by an expensive ECU just to find out it was not the problem.



After countless hours of testing. Masuring. Load testing and checking Wires and contacts. even tried to change CDI unit, CKP and Coil i found that the ignition switch that folowed the bike when it was bpught is malfunctioning.
it Was a Crappy piece fron China tha did not work the right way.
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Only the good die young. Living as a rebel dying as a rebel
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