GEN 3 starting issues

This happened to me at work today... PDI'd a new 2022, took it out for a test ride and brought it back to the shop. Popped it into neutral to ride down the ramp and killed it with the kill switch as I went into the shop. I then set the clock as I'd forgotten to do it prior, and when I went to restart it to ride it out, it did a slow crank, weird whirring thing. I just figured that the battery was tired from sitting in the showroom for a year but I had just ridden the thing for 20 or so minutes so found it strange... then I discovered this thread.

Definitely some oddball problems with a bike that has its roots in the 1990s.
 
I had this issue when I parked the bike in the sun "11am-1pm for a few hours down here in Florida. I wonder if the intake air sensor is getting heat soak causing the bikes A/F ratio to be way off during hot starts. I haven't popped the tank to see if wrapping in heat insulation to help. The starter sounded on point and didn't seem to be a CCA or low volt issue.

I'm going to completely blame the IAT sensor, this maybe required to be insulated. I would have to hook up my ODB2 scanner to see the reported IAT before hot starts to confirm.

Had to add I found 2 MAP sensors on the bike, 1 on the airbox measuring pressure and 1 in the tail measuring BARO. The IAT Sensor mounted on the airbox in a really tight spot. #19 PN 13650-41F10

OTQ1NDQ5OA-c493fc71.png
 
Last edited:
dcnblues said:
So I ordered a battery that wouldn't fit, then I threw away all the packaging before installing it, but Antigravity was pretty great and took the battery back and gave me a full refund no problem, good tech support on the phone. FYI, they are on my good
Click to expand...

dcnblues said:
So I ordered a battery that wouldn't fit, then I threw away all the packaging before installing it, but Antigravity was pretty great and took the battery back and gave me a full refund no problem, good tech support on the phone. FYI, they are on my good list
Click to expand...
 
effyzx said:
has anyone experienced a starting issue with the gen 3 when engine is at running temp, if turned off from kill switch and then turned back on ,getting symptoms of a flat battery till it eventually kicks in and starts ,
Click to expand...
Yes , mine is experiencing that issue of not starting when motor is hot and fan is on
 
Bump…

New bike, 2nd ride, gas stop after 65 miles. Filled up and went to moved to a parking spot. When I hit the started the bike made a god awful rhythmic squealing about 5 revolutions worth before my brain was able to turn the key off. I tried again and fired right up no problem and parked it. I sat there for 10min semi freaking and found this thread and decided to ride straight home and continue digging. Next start it failed again but just acted like a half dead battery, no squealing. Reached down and pulled clutch in this time and it fired no problem. Looks like a dealer visit (no confidence) is in order.

Any new updates on solid cause or resolution?
 
smokein said:
Bump…

New bike, 2nd ride, gas stop after 65 miles. Filled up and went to moved to a parking spot. When I hit the started the bike made a god awful rhythmic squealing about 5 revolutions worth before my brain was able to turn the key off. I tried again and fired right up no problem and parked it. I sat there for 10min semi freaking and found this thread and decided to ride straight home and continue digging. Next start it failed again but just acted like a half dead battery, no squealing. Reached down and pulled clutch in this time and it fired no problem. Looks like a dealer visit (no confidence) is in order.

Any new updates on solid cause or resolution?
Click to expand...
Nope, if there was it would be posted.
 
It happened to my bike again. I found it weird because it wasn't hot (19 celsius) but the bike must have been as I was stuck in city traffic mode finding my way out of f**king Prague. I swear, those Czech dudes are worse at doing street signs than us Hungarians and that's saying something.

Cars behind me honking, I'm waving them on like an idiot, the bike took a minute - and key off-on, handful of throttle - to re-start. No problems since.
 
Just got off the phone with service dept. per Suzuki this is a known issue if using gas less than 95 octane. Solution is use 95 octane. Since we don’t have 95 octane, carry octane boost.

The other issue being looked at was random loss of front brakes. Tech was able to replicate but only authorized to bleed brakes.

Not satisfied with either response. Having them detail the issues and resolutions on the paperwork before I pick up.
 
smokein said:
Just got off the phone with service dept. per Suzuki this is a known issue if using gas less than 95 octane. Solution is use 95 octane. Since we don’t have 95 octane, carry octane boost.

The other issue being looked at was random loss of front brakes. Tech was able to replicate but only authorized to bleed brakes.

Not satisfied with either response. Having them detail the issues and resolutions on the paperwork before I pick up.
Click to expand...

You are in DFW yes? Here we do not have 94 let alone 95. Are they reading the European manual? For clarity, if you do not use gas two points above what is available in this country, the bike uncontrollably squeaks and revs slow when hot? I wonder how many mystery pills they had to ingest to come to that conclusion. When you get there, ask them if you can have some of the drugs that the staff is using.

My 2017 has a brand new battery. It sounds nearly dead when starting hot. FYI I would consider the universal busa slow hot start issue may be a separate issue from that noise it made.

@smokein they are aware of the brake recall but will not take action?

Probably questioning your sanity about returning to a brand new busa at this point?
 
Hayabusa Wannabe said:
You are in DFW yes? Here we do not have 94 let alone 95. Are they reading the European manual? For clarity, if you do not use gas two points above what is available in this country, the bike uncontrollably squeaks and revs slow when hot? I wonder how many mystery pills they had to ingest to come to that conclusion. When you get there, ask them if you can have some of the drugs that the staff is using.

My 2017 has a brand new battery. It sounds nearly dead when starting hot. FYI I would consider the universal busa slow hot start issue may be a separate issue from that noise it made.

@smokein they are aware of the brake recall but will not take action?

Probably questioning your sanity about returning to a brand new busa at this point?
Click to expand...

I made all the same comments to them on the phone, even read the fueling section from the manual. They are aware of the brake recall but per Suzuki it does not include 2023 models. I’m not going to let myself get too upset about this, I’m gonna make sure I get proper documentation and return it again if either issue happens. For my sanity, I hope things are magically fixed. If not, consumer protection laws cover legal fees.
 
mine does the same wont start when hot in gear with clutch pulled in. took it to suzuki they was busy but had a quick look for a quick fix they suggested to turn hill start off. I did and strangley it seems have cured it
 
There is more than one thread on this. I'm in AZ, so mine will do it quite often. There is a solution in our Owner's manual to slightly open the throttle when hot. It does seem to work, and someone started a specific thread on it.
 
smokein said:
Just got off the phone with service dept. per Suzuki this is a known issue if using gas less than 95 octane. Solution is use 95 octane. Since we don’t have 95 octane, carry octane boost.

The other issue being looked at was random loss of front brakes. Tech was able to replicate but only authorized to bleed brakes.

Not satisfied with either response. Having them detail the issues and resolutions on the paperwork before I pick up.
Click to expand...
Are you sure they didn't mean 95 RON, which is 91 octane, or premium?
 
rode all day in the heat yesterday, hill assist is off, not one starting issue...i would say turning hill assist off is the cure (for me) right now, until suzuki finally fixes it. It sounds like it is affecting almost all of us, so it is very odd that suzuki hasn't stepped up yet.

so for those of you dealing with this, turn off your hill assist. let us know if that fixes it for you as well.
 
My 2022 is doing thisl.
ArabianOak said:
rode all day in the heat yesterday, hill assist is off, not one starting issue...i would say turning hill assist off is the cure (for me) right now, until suzuki finally fixes it. It sounds like it is affecting almost all of us, so it is very odd that suzuki hasn't stepped up yet.

so for those of you dealing with this, turn off your hill assist. let us know if that fixes it for you as well.
Click to expand...
By new bike is doing this too (2022 model year). Hill assist had never been turned on though...
Back to dealer today for them to check.
 
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