Hot start solution

[chrisso]

Earlier today (vid attached) on my 100km old Gen 3, I experienced the hot start/compression lock issue exactly like the vid in this post, despite using an after-market heavy-duty lithium battery. You can see my confusion when I started playing with the clutch, I was thinking, "What in the actual f...?" I'm going to try using a bit of throttle next time I fill up and see if that makes a difference. I'll also let the dealer know when it goes in for its initial service.

 

[phalse]

..didnt i read somewhere else on this forum that its nothing to do with compression and whatever else, its a clutch in the starter which is slipping? swear i some someone post pics of this

 

[Hayabusa Wannabe]

..didnt i read somewhere else on this forum that its nothing to do with compression and whatever else, its a clutch in the starter which is slipping? swear i some someone post pics of this

Yes, but it was early years that had a problem part:

Starter Clutch problems | Busa problems

Hi all, well after my encounter with a badger last year that took out me and the busa I finally got it all rebuilt last week. Went to go out for a first blast and noticed that the starter seemed to be not engaging on starter up, then it did. Now it wont engage at all. Have checked the...

www.hayabusa.org

I have a low mileage bike and I can get it to act like a dead battery while cold. Anyone with a starting problem has to dissect it and it could be any number of issues, some issues with this bike sadly still undefined.

 

[phalse]

Yes, but it was early years that had a problem part:

Starter Clutch problems | Busa problems

Hi all, well after my encounter with a badger last year that took out me and the busa I finally got it all rebuilt last week. Went to go out for a first blast and noticed that the starter seemed to be not engaging on starter up, then it did. Now it wont engage at all. Have checked the...

www.hayabusa.org

I have a low mileage bike and I can get it to act like a dead battery while cold. Anyone with a starting problem has to dissect it and it could be any number of issues, some issues with this bike sadly still undefined.

hm. interesting but at the least, that wasn't the thread i was thinking of as pics of parts in the starter were posted.

time to start digging i guess, since now it'll bug me haha

 

[chrisso]

The fact I couldn't replicate the problem after my fuel stop is strange. Now, if we all got together and lobbied Suzuki hard in a mass or organised chaos, they'd do something about it. I'm thinking of the days when the (I think) 2008 Fireblade owners hit Honda with a collective demand over oil consumption. Honda responded with a recall on the oil rings.

EDIT: Many Panigale owners had a similar start up issue - intermitted, usually after fuelling up, dealer couldn't locate the source of the problem, and so on. Well, they began removing EVAP cannisters and claimed it solved all their hot start problems. I'm going to add an EVAP delete kit soon and will let everyone know if this helps. If it does, then that suggests we're dealing with fuel vapour lock. If someone else has already tried this and found it didn't help let me know so I don't waste my time! Thanks.

Final EDIT: just found this thread: EVAP - seems like not all Hayabusa's have one, so deleting it most likely won't help.

 

[Dnyce]

The turbo gen 3’s don’t seem to have this issue. Try that maybe?

 

[mabupa]

hm. interesting but at the least, that wasn't the thread i was thinking of as pics of parts in the starter were posted.

time to start digging i guess, since now it'll bug me haha

@pashnit is the one that posted about the issue and pics of what he replaced on post #2 of his “2024 pashnit touring on a hayabusa” thread.

 

[pashnit]

@pashnit is the one that posted about the issue and pics of what he replaced.

These are just my opinions since we the owners can't seem to cohesively agree but my opinion based on my personal experience is the Gen3 has two separate hot start issues. Caveat my two Gen2s and my Gen1 had zero hot start issues over 200,000 miles of riding i put on those three bikes. Something with this motor is different than the previous Gens. We all know Suzuki made 100+ changes and improvements to the internals of the Gen3 Hayabusa motor. One of those changes had to have some unintended consequences. It's the only rational explanation you can come to that explains the Gen 3 Hot Start Issue when all the previous years did not have this issue. This motor has been in use since 1999. It's almost 2025! It doesn't make sense that our bulletproof motor with millions of issue-free miles put on by Hayabusa owners around the world suddenly has a somewhat universal problem with Gen3 owners round the world that affects the vast majority - but not all - of Gen3 motors.

The dying cat sound you hear in this vid clip is exactly what my Gen3 sounded like.

It started at about 7000 miles being intermittent <some brand new owners have reported this happening to them on the way home from the dealer>, then got steadily worse until it would not start anytime the bike was hot. Cold, starts perfect. I push started my <brand new> Gen3 for five months. I don't commute, I only ride the bike on 1000-mile weekend rides, which means stopping multiple times per day for fuel stops and kicking tires. My style of all-day riding also likely make my Gen3 most susceptible to this issue. Every midday stop, the Gen3 would not start <cue video below> and I push started the bike & it started with the least bit of <human powered> effort.

The fix to my issue (& the one in the video) is the Starter Clutch Assembly is slipping (remember it's brand new - explain that.), Replace that and issue solved, right?! Nope, the Gen3 has two Hot Start Issues. Replacing the Starter Clutch Assembly (i simply ordered the OEM part from Rezilla). My Gen3 still has Hot Start Issue after replacing the Stater Clutch Assembly, but this second issue is mentioned in the Gen3 Manual that comes with the bike (Page 2-84). Crack the throttle about a quarter turn and then hit the starter. Bike fires right up. If I forget to crack the throttle, the bike will not start (when hot) and cranks slowly over- even after replacing the Starter Clutch Assembly.

 

[pashnit]

This is taking the Starter Clutch Assembly apart, these plates are slipping

 

[Bumblebee]

These are just my opinions since we the owners can't seem to cohesively agree but my opinion based on my personal experience is the Gen3 has two separate hot start issues. Caveat my two Gen2s and my Gen1 had zero hot start issues over 200,000 miles of riding i put on those three bikes. Something with this motor is different than the previous Gens. We all know Suzuki made 100+ changes and improvements to the internals of the Gen3 Hayabusa motor. One of those changes had to have some unintended consequences. It's the only rational explanation you can come to that explains the Gen 3 Hot Start Issue when all the previous years did not have this issue. This motor has been in use since 1999. It's almost 2025! It doesn't make sense that our bulletproof motor with millions of issue-free miles put on by Hayabusa owners around the world suddenly has a somewhat universal problem with Gen3 owners round the world that affects the vast majority - but not all - of Gen3 motors.

The dying cat sound you hear in this vid clip is exactly what my Gen3 sounded like.

It started at about 7000 miles being intermittent <some brand new owners have reported this happening to them on the way home from the dealer>, then got steadily worse until it would not start anytime the bike was hot. Cold, starts perfect. I push started my <brand new> Gen3 for five months. I don't commute, I only ride the bike on 1000-mile weekend rides, which means stopping multiple times per day for fuel stops and kicking tires. My style of all-day riding also likely make my Gen3 most susceptible to this issue. Every midday stop, the Gen3 would not start <cue video below> and I push started the bike & it started with the least bit of <human powered> effort.

The fix to my issue (& the one in the video) is the Starter Clutch Assembly is slipping (remember it's brand new - explain that.), Replace that and issue solved, right?! Nope, the Gen3 has two Hot Start Issues. Replacing the Starter Clutch Assembly (i simply ordered the OEM part from Rezilla). My Gen3 still has Hot Start Issue after replacing the Stater Clutch Assembly, but this second issue is mentioned in the Gen3 Manual that comes with the bike (Page 2-84). Crack the throttle about a quarter turn and then hit the starter. Bike fires right up. If I forget to crack the throttle, the bike will not start (when hot) and cranks slowly over- even after replacing the Starter Clutch Assembly.

View attachment 1689976


View attachment 1689978

View attachment 1689977

I know I for one would be a little more than cranky if I had to push start a new relatively expensive bike.....

 

[mabupa]

These are just my opinions since we the owners can't seem to cohesively agree but my opinion based on my personal experience is the Gen3 has two separate hot start issues. Caveat my two Gen2s and my Gen1 had zero hot start issues over 200,000 miles of riding i put on those three bikes. Something with this motor is different than the previous Gens. We all know Suzuki made 100+ changes and improvements to the internals of the Gen3 Hayabusa motor. One of those changes had to have some unintended consequences. It's the only rational explanation you can come to that explains the Gen 3 Hot Start Issue when all the previous years did not have this issue. This motor has been in use since 1999. It's almost 2025! It doesn't make sense that our bulletproof motor with millions of issue-free miles put on by Hayabusa owners around the world suddenly has a somewhat universal problem with Gen3 owners round the world that affects the vast majority - but not all - of Gen3 motors.

The dying cat sound you hear in this vid clip is exactly what my Gen3 sounded like.

It started at about 7000 miles being intermittent <some brand new owners have reported this happening to them on the way home from the dealer>, then got steadily worse until it would not start anytime the bike was hot. Cold, starts perfect. I push started my <brand new> Gen3 for five months. I don't commute, I only ride the bike on 1000-mile weekend rides, which means stopping multiple times per day for fuel stops and kicking tires. My style of all-day riding also likely make my Gen3 most susceptible to this issue. Every midday stop, the Gen3 would not start <cue video below> and I push started the bike & it started with the least bit of <human powered> effort.

The fix to my issue (& the one in the video) is the Starter Clutch Assembly is slipping (remember it's brand new - explain that.), Replace that and issue solved, right?! Nope, the Gen3 has two Hot Start Issues. Replacing the Starter Clutch Assembly (i simply ordered the OEM part from Rezilla). My Gen3 still has Hot Start Issue after replacing the Stater Clutch Assembly, but this second issue is mentioned in the Gen3 Manual that comes with the bike (Page 2-84). Crack the throttle about a quarter turn and then hit the starter. Bike fires right up. If I forget to crack the throttle, the bike will not start (when hot) and cranks slowly over- even after replacing the Starter Clutch Assembly.

View attachment 1689976


View attachment 1689978

View attachment 1689977

Great info! I have not put enough miles on my 2022 so haven’t experienced the issue but, I’m sure it’ll happen once I start riding more and, I’m sure the Florida heat won’t help.

 

[chrisso]

The video was the first time filling up since picking the bike up from the dealer. I filled up using 98RON (not sure if that's equivalent to 93 Octane), and since then I've not been able to replicate the issue. I wonder if the dealer put a lower quality fuel in when new. Others have posted that fuel quality influences hot starting, but I'm personally convinced the problem is vapour lock.

Something aint right Suzuki - I know you read these posts, I know you're aware of the problem, and I know you're working on a solution - please get onto it and help our arses out.

 

[sixpack577]

The video was the first time filling up since picking the bike up from the dealer. I filled up using 98RON (not sure if that's equivalent to 93 Octane), and since then I've not been able to replicate the issue. I wonder if the dealer put a lower quality fuel in when new. Others have posted that fuel quality influences hot starting, but I'm personally convinced the problem is vapour lock.

Something aint right Suzuki - I know you read these posts, I know you're aware of the problem, and I know you're working on a solution - please get onto it and help our arses out.

lmao, sorry man...but Suzuki could care less, and is not working on any solutions.
They don't care that the quickshifter is junk, yet the Gsxr1k's is great.
They don't care about fuel-pump problems, and give people the run around at dealers, and don't care about any of the Gen3's several issues.
The Only reason there was a front master cylinder recall is because they didn't want the liability of failing brakes killing someone.
And if you think they cared then...it took over a year and a half for them to issue the recall...and it effects 4 model years.
Suzuki officially sucks as a motorcycle company now, and has gone way downhill like so many other big companies in recent years.
They no longer care about their product or image, as their 'Flagship' Gen3 has too many issues, and should have none.

 

[chrisso]

Since filling up with high octane fuel I've not been able to replicate the issue. Out of five or six "hot starts' since I posted the vid, it's fired up without fail. One time it stumbled a little (the fan had kicked in immediately) but still fired up. This is in the context of Perth West Australia where we've had several days of high 30 degree C temp's.

 

[Duro5341]

Since filling up with high octane fuel I've not been able to replicate the issue. Out of five or six "hot starts' since I posted the vid, it's fired up without fail. One time it stumbled a little (the fan had kicked in immediately) but still fired up. This is in the context of Perth West Australia where we've had several days of high 30 degree C temp's.

I read a while ago that these bikes required 93 octane(North America), rather than the 90+ on the tank sticker.......................................The higher octane rating prevented the hot start issue. No pre-ignition from hot spots maybe????

This happened to me when I first picked up the bike new from the dealer. Got it home, parked it outside and when I went to open t he garage door and bring it in it wouldn't start. After I walked it into the garage and it sat for 20 minutes it started up no problem. I had it happen once more weeks later after filling up with gas and was reading about it and the octane rating being wrong on the bikes.

I have since then only ever put 93 octane in the bike, and the problem hasn't happened again..............I fuel up, for 5-10 minutes, hit the start button and it always fires just fine. I did notice after I put in a lithium battery it cranks over much faster and better regardless of cold or hot, so this might help as well. I have only ever used Shell fuels in this bike from new, as that's my gasoline of choice for all my vehicles, and engines.

Never had to crack the throttle to start it yet..........only time will tell

Cameron

 

[Cruising180]

I've only dealt with the hot start issue twice. Both times were when I embarrassingly stalled the bike going to pull away at a traffic light. One time almost got me rear-ended. I knew about the issue and to open the throttle when starting but in the moment that info flew out of my head and took a few seconds to come back.