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Help for cbr300 starting problem

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Old Sep 1, 2023 | 09:24 PM
  #1  
Cbrnoob88's Avatar
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Default Help for cbr300 starting problem

Hi folks am very new to bikes. Had left unattended for a couple of weeks so normally start often if I'm not riding. But I went to start and it wouldn't. Bump started no worries. But intially thought it was a flat battery or buggered battery. Thought weird cause I haven't even done 300kms on it.

To my suprise after charging it still did not start. I just get a constant ticking noise (or the wah noise when you first turn it on and the light comes on)coming from the relays and am unsure what relays they are. Help for a new person pleeeeease as the weather here is beautiful!!
 
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Old Sep 2, 2023 | 12:38 AM
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Could be dead battery beyond repair with charging. Do following tests:

1. battery voltage with everything OFF, volts = ??

2. battery voltage with key ON, start/stop = RUN, volts = ??

3. battery voltage while pushing START button, volts = ? ?
 
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Old Sep 2, 2023 | 01:55 AM
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Originally Posted by dannoxyz
Could be dead battery beyond repair with charging. Do following tests:

1. battery voltage with everything OFF, volts = ??

2. battery voltage with key ON, start/stop = RUN, volts = ??

3. battery voltage while pushing START button, volts = ? ?

I don't have anything to test it with
 
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Old Sep 2, 2023 | 08:39 AM
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If you are telling us that it will bump start fine, but when you hit the start button it just clicks, then there's a problem with the battery.

Use a PROPER battery charger to charge it up (not a trickle charger) and report back.

If you can't do that - take it to a mechanic.
 
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Old Sep 2, 2023 | 01:08 PM
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Originally Posted by Cbrnoob88
I don't have anything to test it with
get this: https://www.harborfreight.com/7-func...ter-63759.html

learn to use it: https://learn.sparkfun.com/tutorials...e-a-multimeter

Doing your own diagnostics and repairs will save you ten$ of thou$and$ in repair bills.
 
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Old Sep 2, 2023 | 02:22 PM
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Originally Posted by rockpool
If you are telling us that it will bump start fine, but when you hit the start button it just clicks, then there's a problem with the battery.

Use a PROPER battery charger to charge it up (not a trickle charger) and report back.

If you can't do that - take it to a mechanic.
What do you consider "proper"?
 
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Old Sep 3, 2023 | 12:22 AM
  #7  
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You want smart multi-stage charger. These usually have an initial desulfating stage to recover deeply discharge batteries. Also long-term storage mode where it only charges to 95%. Then lets battery sit and self-discharge to 85% or so. Then pulse-charges it back up to 95%. Much, much better for battery-life than trickle/tender chargers that max-out battery at 100% all the time. Fry it for sure!

https://bikerrated.com/gear/maintena...tery-chargers/

https://www.topmoto.com/best-motorcy...argers-review/

https://products.motorcyclenews.com/...tery-chargers/



Amazon Amazon
<--- good charger
 

Last edited by dannoxyz; Sep 3, 2023 at 03:53 PM.
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Old Sep 3, 2023 | 07:54 AM
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Originally Posted by Cbrnoob88
What do you consider "proper"?
What Danny said - multistage. I particularly like the noco Genius range.

If you have a car as well, buy a car-sized charger with at least 5A capacity - it will work just as well on your bike.
 

Last edited by rockpool; Sep 3, 2023 at 07:58 AM.
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