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New 2018 MT09 owner - Bike in cold outside for 2 weeks now - won't start

1782 Views 17 Replies 11 Participants Last post by  dandywarhol
Hey y'all. Purchased this bike a few months ago and the battery has been pretty flawless to date. Well here in Austin TX it has gotten down to the 40s/30s at night and it's been raining quite a bit over the past month so I threw the bike cover on her and left her in the backyard. Planned to take her for a ride and heat everything up today and the pump seems to prime, the battery attempted to start for a bit...but no dice. I tried several times and no start. Towards the end it just makes a rapid clicking noise. I put jumper cables on and tried to jump it from my car (didn't turn the car on) and still no dice. I currently have it on a 1.5Amp trickle charger and plan to try again in 12hrs (tomorrow morning). Is there anything else BESIDES a bad battery that this could be? I mean I know these bikes have weird starting issues e.g. in the morning on a cold start she usually blasts right up on the first try but when heated it almost always takes 2 trys. First bike I've ever owned that did this and I've had quite a few. (2001 CBR F4i / 2008 CBR 600 RR / 2009 R6 to name a few)

And man, I hate this push down button! Just feels cheap. Why didn't Yamaha use just a good ole push button? Maybe it's a naked bike/non-sport bike thing?

Any feedback is much appreciated!


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I agree, probably a deceased battery. Strange that it wouldn't start off another though.
Which makes me think the issue is in the starter switch or solenoid............................
For sure a flat battery. These bikes need a well-kept battery.
I accept that but why wouldn't it start with a jumper battery? Hence my reply. 😉
I think I have an explanation for why it would not start with a jumper. I admit that part of this is guessing though. I think we will all agree that electronics can be finicky about having the correct voltage. Solenoids and starters not so much. When you hook up a jumper to a very dead battery you are appling approximately 12.8 volts to charge the dead battery. You have plenty of amps to turn the motor over BUT your battery is still charging. In doing so it is using the voltage and amps to restore itself thus I would guess if you put a meter on the output it might only show 11 volts or so even if the starter is turning. That is way less voltage than the electronics requires. Under such a condition I am sure that even attenpting to push start would be unsuccessful.
Interesting hypothesis.
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