Problem with ignition coils?

[ramondevic]

About 6 months ago my 2017 Tiger 800 xcx didn’t start.
The battery was fine and the noises were normal but it looked like the spark was failing.
We checked the spark plugs and saw that one of the ignition coils failed, we changed it and it turned on.

Now the same thing happens, I haven’t checked any spark plugs or coils yet, I passed the test with TigerTool V3.0 and it says the 3rd coils fail.
Could it be that all 3 coils suddenly fail or could it be something else?

Thanks.

[AvgBear]

"OBD Battery Voltage: 11.7V"
May be an issue? That equals about 30% of fully charged.

[characticus]

Very unlikely that all 3 coils have failed. Do you have a multimeter? If so check the voltage on the brown/pink wire at the coils.

[Paulhere]

Battery should be 12.6 - 12.8v. You've let it get so low its likely sulphated the plates, need a new one.

I put mine on trickle charger one day a week, check with mm beforehand so I know if they're losing charge.

Edit: Read link.
https://www.yuasa.co.uk/info/motorcycle-and-powersport/installation-testing-and-maintenance/

[ramondevic]

Originally Posted by AvgBear

"OBD Battery Voltage: 11.7V"
May be an issue? That equals about 30% of fully charged.

I will try to get a portable battery charger to start the bike and take a turn to see if it can be loaded that way.
Thanks.

[ramondevic]

Originally Posted by characticus

Very unlikely that all 3 coils have failed. Do you have a multimeter? If so check the voltage on the brown/pink wire at the coils.

I can’t check it, I have the bike in a public garage and I can’t disassemble the gas tank and check the coils.
Thanks.

[ramondevic]

Originally Posted by Paulhere

Battery should be 12.6 - 12.8v. You've let it get so low its likely sulphated the plates, need a new one.

I put mine on trickle charger one day a week, check with mm beforehand so I know if they're losing charge.

Edit: Read link.
https://www.yuasa.co.uk/info/motorcycle-and-powersport/installation-testing-and-maintenance/

Surely it must be this, in recent months we have had home or municipal confinement and the bike has been stopped for too long. 

The bike (and the battery) is almost 4 years old and it must be time to change the battery.

Thanks for the link, I will read it calmly

 

[ramondevic]

The problem was with the battery, I changed it and it starts up perfectly. 

Thanks to everyone for the help.