High-pitched buzzing/hissing sound from gas tank with new Shorai battery

[stomatomoto]

Full disclosure, I read none of the "read this before posting" stuff, thug life.  :euro 


I just installed a new Shorai battery in my K75c, and yes it was properly selected using Shorai's battery picker thing, so I know it's the right one. Battery starts the bike up perfectly, but immediately after starting it's just got this hissing/buzzing noise that sounds like it's coming from the center of the gas tank... Gas light is not on, appears to have fuel as well. The sound is immediate upon startup, there's no "warming up" that happens before it starts, so I think it might be electrical... Any ideas?

[Laitch]

Full disclosure, I read none of the "read this before posting" stuff, thug life.  :euro 
I just installed a new Shorai battery in my K75c, and yes it was properly selected using Shorai's battery picker thing, so I know it's the right one.

We're supposed to believe that when you won't follow directions? :giggles 

[Laitch]

Battery starts the bike up perfectly, but immediately after starting it's just got this hissing/buzzing noise that sounds like it's coming from the center of the gas tank...

Post an audio file and join the 21st Century.

[stomatomoto]

Post an audio file and join the 21st Century.

Maaaaan called out! Alright for your viewing and listening pleasure then: https://www.youtube.com/watch?v=gAM10OOLYUk&feature=youtu.be

[bocutter Ed]

greetings...

sounds like the hot and neutral are reversed or phase reversed or you on the wild leg...

j o

this should be in the rotary phase conversion sub-forum ...

[stomatomoto]

greetings...

after listening to that video i have concluded you on the wild leg...

embrace it and commence to motobricking...

im thinking a couple dozen at hog island oysters is in order...

j o

Does this guy come with a translator? I love you man, but I'm so lost, all I did was buy the thing with that cork already stuck in the dash, I'm just a guy with a lot of landscaping to do.


EDIT: somehow I missed the part about the Hog Island Oysters, so you know Napa eh! If you're ever in town, first dozen are on me.

[Laitch]

Sounds good to me. Proceed with landscaping.

[stomatomoto]

It is now completely refusing to start at all, instead making only a loud buzzing sound when ignition button is pressed. FML.

[Laitch]

It is now completely refusing to start at all, instead making only a loud buzzing sound when ignition button is pressed. FML.

Let's hear the buzzing. Check that your transmission battery ground is clean and tight. What's the battery voltage output?

[stomatomoto]

SAD FACE:


EDIT: Forgot to mention the ground connection is dry and tight as well, there's plenty of joke material there but I'm too bummed out. First day I felt good enough to get out on the bike and it does this. Just installed the Shorai today as well, so I know it's good.

[kioolt]

Are you sure you got the polarity right on the battery?

[kioolt]

I'm  assuming that the K75C you have is the same as my K100LT in regards as to what has to be removed to replaced the battery.  When you removed the tool tray did you unplug the fuel injection computer?  You may want to check the plug on it.  It wouldn't hurt to unplug and replug it.

[Laitch]

Just installed the Shorai today as well, so I know it's good.

You don't know that unless you measured its output with a meter. Cheer up! Before you know it, you'll be back out there cursing the legions of thoughtless human units imperiling your ride.

[stomatomoto]

You don't know that unless you measured its output with a meter. Cheer up! Before you know it, you'll be back out there cursing the legions of thoughtless human units imperiling your ride.

It came straight from Shorai's customer service, the first one I got was damaged from shipping, so they RMA'ed, they say they test em', so not sure how it couldn't be perfect basically, but I guess stranger things have happened...  ¯\_(ツ)_/¯

@kioolt interesting, good to know, I'll check on that tomorrow then, thanks for the tip! As for the polarity, it's wired up just like the old monstrous lead acid one was, and that was working normally then as well, so not sure how that could be an issue.


EDIT: sorry @johnny re "how was this thing running b4 the new battery and what has been done to it recently..."; it was "serviced" by the shop I bought it from in SF, but otherwise I don't really know too much, there's a full service history with a lot of things that were done to it at 45k miles, it's at 50k now, but I don't have that handy at the moment. Actually another thing I've been worrying about is the splines, not quite sure when last they were done... Anyway I can assume it was serviced correctly though, the shop has an excellent reputation for good and honest work.

[BrickMW]

Full disclosure, I read none of the "read this before posting" stuff, thug life.  :euro 

At least you were honest and didn't go with the usual "I've searched everywhere and can't...." :hehehe


Love the cork! Especially for a Napa Brick.. need the full set! :riding:


The "whine" you hear, now even clearer since the starter/engine running isn't drowning it out, is your fuel pump inside the tank and 100% normal and healthy sounding.


Have you read this? Follow the flow chart and you will easily find the culprit causing your starter woes..

[kioolt]

The reason that I mentioned the fuel injection computer is that it supplies the ground side to the starter relay coil.  When changing the battery in my K100LT I will sometimes unplug the fuel injection computer and sometimes I will just remove it from the tool tray by pulling it out by the plug.  It it's not plugged in completely that could be the problem.  Also, it would be good to know if your headlight is on or off when you turn the key on.  This could tell us if your starter could be the problem believe it or not.  The starter provides a ground path for the load shed relay.  If this ground path is not there then the load shed relay will not activate and the headlight will be off.  Let us know about your headlight and we can go from there.

[racket]

It is now completely refusing to start at all, instead making only a loud buzzing sound when ignition button is pressed. FML.

Something easy to check : make sure the connection to the starter motor is tight

[stomatomoto]

Something easy to check : make sure the connection to the starter motor is tight

Erm, near as I can tell, all that was done already, but I'd have to figure out how to do that if I were to try it myself at this point.

The reason that I mentioned the fuel injection computer is that it supplies the ground side to the starter relay coil.  When changing the battery in my K100LT I will sometimes unplug the fuel injection computer and sometimes I will just remove it from the tool tray by pulling it out by the plug.  It it's not plugged in completely that could be the problem.  Also, it would be good to know if your headlight is on or off when you turn the key on.  This could tell us if your starter could be the problem believe it or not.  The starter provides a ground path for the load shed relay.  If this ground path is not there then the load shed relay will not activate and the headlight will be off.  Let us know about your headlight and we can go from there.

Headlight is OFF, so therefore I think I have a direction to go in, will attempt to chase that lead when I'm able to next, thanks!

At least you were honest and didn't go with the usual "I've searched everywhere and can't...." :hehehe


Love the cork! Especially for a Napa Brick.. need the full set! :riding:


The "whine" you hear, now even clearer since the starter/engine running isn't drowning it out, is your fuel pump inside the tank and 100% normal and healthy sounding.


Have you read this? Follow the flow chart and you will easily find the culprit causing your starter woes..

I did start to read that, didn't really find something very solid/specific to go off of, "bad starter" didn't seem right as it was checked recently, but I'll look again, thanks!

[kioolt]

Since the headlight is off (assuming good bulb) it sounds like you have a starter problem.  Put a voltmeter on the starter lead to check the voltage.  If you have good voltage there and it's not running then it's your starter.  End of troubleshooting.