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When Starting my bike

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Wheezybiker
Nitrous Nuisance



Joined: 19 Jun 2017
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PostPosted: 22:07 - 20 Nov 2019    Post subject: When Starting my bike Reply with quote

May be nothing may be something
Bike is kept on drive under a cover year round
I have noticed that when starting sometimes all the digital images on the dash go out
Bike has always started first push though have noticed that sometimes takes an extra bit of time to fire

Bike is a Yamaha xj6 61 plate that does about 200 miles a month commuting

Question is is my battery on its way or is it just because weather has been cold and damp last few weeks
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jaffa90
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Joined: 06 Apr 2016
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PostPosted: 00:11 - 21 Nov 2019    Post subject: Reply with quote

As Tef says / states to bananalover (recent post), it`s the time of the year where you need a good battery providing the charging system is ok.

The battery should read 12.6v before starting the day after or 12.8v in warm weather.

Q, when did you last check the battery connections?
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Wheezybiker
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PostPosted: 05:24 - 22 Nov 2019    Post subject: Reply with quote

Thanks for that
Have read the other thread and makes sense
I havent checked the terminals recently but will do this weekend
I have had the bike nearly 3 yrs and I don't know if the battery has ever been changed so will look at that as well
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MCN
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Joined: 22 Jul 2015
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PostPosted: 10:28 - 22 Nov 2019    Post subject: Reply with quote

If you suspect it's dour to start then given the vintage of the machine, it is a probability that the battery is goosed.

4-5 years is good (If maintained and not abused or otherwise stressed.)

A volt meter won't test the battery for what you are looking for. The battery needs a heavy load applied and the voltage drop observed with the load on.

High Rate Discharge tester. Halfords can test for you. It takes about 5 mins after you access the battery.
Don't need to buy from them.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.
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Polarbear
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Joined: 24 Feb 2007
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PostPosted: 11:03 - 22 Nov 2019    Post subject: Reply with quote

While agreeing with that ^^^ you can get an idea of the batteries condition with a no load standing voltage check.

https://www.totalmotorcycle.com/maintenances/photos/BatteryChart.gif

Also, see what the voltage drops to when turning the engine over.

Saying all that, a new battery is a good place to start.
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MCN
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Joined: 22 Jul 2015
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PostPosted: 12:56 - 22 Nov 2019    Post subject: Reply with quote

Polarbear wrote:
While agreeing with that ^^^ you can get an idea of the batteries condition with a no load standing voltage check.

https://www.totalmotorcycle.com/maintenances/photos/BatteryChart.gif

Also, see what the voltage drops to when turning the engine over.

Saying all that, a new battery is a good place to start.


The test we used for big diesel starting batteries was to meter the battery whilst cranking. Works for other stuff, as you'll know.

The issue with this test is being able/knowing how to cut fuel or sparks to prevent the beast starting before you can read the effin meter. 🤣

Also....

If you can get to the electrolyte in each cell, one meter probe on a post then dip the other probe into the electrolyte.
It should read 2volts on a charged battery. (12v battery made up of 6 x 2v cells in series.)
Dip each cell like this and if they're are any that are significantly lower than an average then the battery is phuqued. Probably shorted between cells.
Wash the probes in water to remove the acid.

The test works on flatted batteries but the lower voltages do not show any differences as clearly. Fully charged will shout out a bad cell/s.

The AGM type batteries are excluded from this test.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.
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Old Thread Alert!

The last post was made 4 years, 156 days ago. Instead of replying here, would creating a new thread be more useful?
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