Starting issues - MVAgusta.net
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post #1 of 8 (permalink) Old 09-13-2019, 09:51 AM Thread Starter
Starting issues

So my brutale 675 has a hard time starting in the morning after it has been cold at night. After the first start of the day it usually starts easier.
Anyone have experience with this? Is it a common issue?
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post #2 of 8 (permalink) Old 09-13-2019, 09:52 AM Thread Starter
Oh yeah it is a 2015 modle
post #3 of 8 (permalink) Old 09-14-2019, 02:18 PM
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Check your battery.

Starting issues are well documented here on this forum. If your battery is fine, then probably your sprag clutch, but this hasnt been as much of an issue on the 675 bikes (I'm still on the original on my 2012).
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post #4 of 8 (permalink) Old 09-14-2019, 05:45 PM Thread Starter
Thank you. Replaced the battery and it starts sooner. 3 attempts and it fired up. From reading the forum I guess my sprag clutch could be a little worn now from the weak battery.
3 is better than not at a though
post #5 of 8 (permalink) Old 09-15-2019, 07:07 AM
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Please describe how you are "attempting" to start your bike....

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post #6 of 8 (permalink) Old 09-15-2019, 09:26 PM
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Do you have a lithium battery?

It is important to remember that both a normal AGM battery, as well as a lithium has significantly less cold cranking capacity when the battery is very cold. I have a lithium and when touring, camping and the temps get below 9 degree C then i have to go through a little 'warm up' routine to get things started.

One advantage of a lithium is that it heats up when current is drawn (chemical reaction etc). So i switch on the bike, put the heated grips on full and wait at least 10 minutes for the battery to warm up. Even then it may take two or three attempts at cranking before she starts (you will notice it cranking easier and easier at each attempt as the current draw heats the battery leading to more current being available). It might throw a sensor error (the rpm reached is not high enough to trigger ignition signal) but just keep on trying and she will start.

Not every hard start situation in the cold is a sprag issue. The above occurs with old and new sprag's.

PS: Lithium batteries have more cranking capacity available at lower temperatures than a comparable AGM.

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post #7 of 8 (permalink) Old 09-19-2019, 07:02 PM Thread Starter
I put the key in and turn it on. Let the bike run through its steps and then press the button. Lately I give it a little throttle and it seems to come to life sooner.
post #8 of 8 (permalink) Old 09-20-2019, 07:04 AM
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Quote:
Originally Posted by [email protected] View Post
I put the key in and turn it on. Let the bike run through its steps and then press the button. Lately I give it a little throttle and it seems to come to life sooner.

Pressing the button: Do you hold the button for a decent period of time? How long?

Touching the throttle during the startup check will tell the ECU the TPS is misadjusted.
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