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Yamaha ybr 125 2016 wont start

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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 16:15 - 21 Jan 2024    Post subject: Reply with quote
WD Forte wrote:
Just had butchers at the YBR manual
Try this
Select neutral
turn on the ignition and pull the clutch lever in and hold it in as
you press the starter
If it starts but cuts out as you release the lever the side stand switch is
the fault

all this does is confirm the fault not fix it but at least it does tell you the
black/white wire fix will get it running so
all you need to do is cut it, strap it to ground and off you go


I’ve just had the bike on charge for 2 hours and with the battery pack still connected the bike has just started up perfectly fine. Do you think my battery is just weak and need replacing?
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Nobby the Bastard
Harley Gaydar



Joined: 16 Aug 2013
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PostPosted: 16:46 - 21 Jan 2024    Post subject: Reply with quote
What the outcome of the test suggested by WD? HAVe you tried putting it in gear after starting it and riding away?

A flat battery may not be the fault of the battery, it could be a problem with the charging system but you wont really be able to test that without a multimeter.
____________________
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Sprint ST 1050
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 17:38 - 21 Jan 2024    Post subject: Reply with quote
Nobby the Bastard wrote:
What the outcome of the test suggested by WD? HAVe you tried putting it in gear after starting it and riding away?

A flat battery may not be the fault of the battery, it could be a problem with the charging system but you wont really be able to test that without a multimeter.


There’s currently a storm going on so I can’t go out and test my bike I have got the battery charging and will go out and test ride it once this weather has packed in
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Kawasaki Jimbo
World Chat Champion



Joined: 09 Oct 2015
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PostPosted: 18:03 - 21 Jan 2024    Post subject: Reply with quote
Quote:
not even had it for 2 weeks and it has broken down on me and wont start back up.


Does this mean it started, rode fine and then cut out on the journey? Or simply won’t start in the morning?

Do you have jump leads and access to another vehicle’s battery?
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 18:52 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Quote:
not even had it for 2 weeks and it has broken down on me and wont start back up.


Does this mean it started, rode fine and then cut out on the journey? Or simply won’t start in the morning?

Do you have jump leads and access to another vehicle’s battery?


Just tested it then and the bike started but cut out and then won’t start again managed to bump start it down a hill it has power for a second and then cuts out again is this my ignition coil?
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 18:59 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Quote:
not even had it for 2 weeks and it has broken down on me and wont start back up.


Does this mean it started, rode fine and then cut out on the journey? Or simply won’t start in the morning?

Do you have jump leads and access to another vehicle’s battery?


It was running fine until Friday on the way to work it just cut out on me and wouldn’t start back up since
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Kawasaki Jimbo
World Chat Champion



Joined: 09 Oct 2015
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PostPosted: 19:00 - 21 Jan 2024    Post subject: Reply with quote
HarryC01 wrote:
Just tested it then and the bike started but cut out and then won’t start again managed to bump start it down a hill it has power for a second and then cuts out again is this my ignition coil?

Cut out once in gear, or when a separate jump-start battery was disconnected, or simply stopped running in neutral?
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 19:01 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
HarryC01 wrote:
Just tested it then and the bike started but cut out and then won’t start again managed to bump start it down a hill it has power for a second and then cuts out again is this my ignition coil?

Cut out once in gear, or when a separate jump-start battery was disconnected, or simply stopped running in neutral?


Cut out when I put it into gear and now can’t get it started again even in neutral
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Kawasaki Jimbo
World Chat Champion



Joined: 09 Oct 2015
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PostPosted: 19:05 - 21 Jan 2024    Post subject: Reply with quote
Will it start when connected to another known, good vehicle battery (jump-started)?
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 19:30 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Will it start when connected to another known, good vehicle battery (jump-started)?


It starts connected to a battery charger currently letting it idle
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 19:32 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Will it start when connected to another known, good vehicle battery (jump-started)?


It just turned off itself whilst just letting idle for 2 mins
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Kawasaki Jimbo
World Chat Champion



Joined: 09 Oct 2015
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PostPosted: 19:36 - 21 Jan 2024    Post subject: Reply with quote
If you can jump start from another battery and leave it connected, does it stall after 2 minutes?
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 19:40 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
If you can jump start from another battery and leave it connected, does it stall after 2 minutes?


Yes it just did that then now won’t switch back
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Kawasaki Jimbo
World Chat Champion



Joined: 09 Oct 2015
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PostPosted: 19:48 - 21 Jan 2024    Post subject: Reply with quote
Do you hear the fuel pump running when you switch the ignition on?
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 19:51 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Do you hear the fuel pump running when you switch the ignition on?


Yeah it makes popping sounds if I try use the throttled when starting but now it’s not starting all together
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Kawasaki Jimbo
World Chat Champion



Joined: 09 Oct 2015
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PostPosted: 20:19 - 21 Jan 2024    Post subject: Reply with quote
I meant could you hear the fuel pump whirring between turning the key and pressing the start button?

However, popping would suggest fuel is getting through (could you smell petrol?) but not igniting, so we’re back to electrical issues.
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 20:20 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
I meant could you hear the fuel pump whirring between turning the key and pressing the start button?

However, popping would suggest fuel is getting through (could you smell petrol?) but not igniting, so we’re back to electrical issues.


Yeah it makes that whirring sound when I turn the ignition on
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 20:20 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
I meant could you hear the fuel pump whirring between turning the key and pressing the start button?

However, popping would suggest fuel is getting through (could you smell petrol?) but not igniting, so we’re back to electrical issues.


Also yes I could smell fuel too
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Kawasaki Jimbo
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Joined: 09 Oct 2015
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PostPosted: 20:25 - 21 Jan 2024    Post subject: Reply with quote
Was it a private purchase, or from a dealer?
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 20:27 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Was it a private purchase, or from a dealer?


Private and had literally just got MOT done in December so not sure how it’s managed to pass
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 20:28 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Was it a private purchase, or from a dealer?


Bought it will MOT
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Kawasaki Jimbo
World Chat Champion



Joined: 09 Oct 2015
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PostPosted: 20:28 - 21 Jan 2024    Post subject: Reply with quote
Also, will it continue to run for longer than the aforementioned 2 minutes if the fuel cap is open? Just wondering if there’s a vacuum building in the tank and preventing fuel from flowing out.
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 20:36 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Also, will it continue to run for longer than the aforementioned 2 minutes if the fuel cap is open? Just wondering if there’s a vacuum building in the tank and preventing fuel from flowing out.


It just started first time with fuel cap taken off it
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 20:37 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Also, will it continue to run for longer than the aforementioned 2 minutes if the fuel cap is open? Just wondering if there’s a vacuum building in the tank and preventing fuel from flowing out.


Just cut out less than a minute idling
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HarryC01
Two Stroke Sniffer



Joined: 19 Jan 2024
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PostPosted: 20:40 - 21 Jan 2024    Post subject: Reply with quote
Kawasaki Jimbo wrote:
Also, will it continue to run for longer than the aforementioned 2 minutes if the fuel cap is open? Just wondering if there’s a vacuum building in the tank and preventing fuel from flowing out.


Should this be connected to something?
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