2000 Hayabusa Cranks But No Start When Warm

[dpc467]

I have a GEN 1 2000 Suzuki Hayabusa. I have a problem with intermittent no start after 20-30 minutes of riding.
Starts right up early in the morning or after it sits overnight. Today, I pulled it outside and fired it right up. Let it warm up. Then took a ride for about 15 minutes or so. I stopped a Kum & Go gas station to smoke a cigarette and get a Mt. Dew. I then got on the bike and it would crank over like crazy but would not start. I sat there for about 1-1/2 hours hanging out. Tried to start it and it barely started and it sounded horrible because it was misfiring or something. And it would not accelerate with the throttle. Finally I decided to get my buddy with a trailer to come get me and the bike and take it home. When I get home, I checked the battery voltage and it was at like 12.5 so I threw my 2amp charger on it for a minutes just to be safe. It got up to 12.8 or so. I decide to hit the starter button and BAM, it fired right up again and ran smooth and pretty. When idling it sits at about 13.1 volts and with throttle increased it do go up to high 13 volts. It has done this to me every time I ride it. Prior to this, in the past, I replaced the stator/crankshaft sensor and the rectifier. The plugs on those two items were kinda melted so I repaired those and all is good. But I have no idea why it is not starting when it warmed up good.

Is it possible that the cam sensor is causing this? I have no FI light on and I have no idea how to pull codes on it.

[LC4CARL]

Ugh. Any sense of whether it's a fuel or ignition problem? The melted bits are concerning.

[BigBSBusa]

Welcome to the .org! Check this thread for dealer mode: Paper clip for dealer mode? | Busa problems.

[dpc467]

Ugh. Any sense of whether it's a fuel or ignition problem? The melted bits are concerning.

The wiring plugs that got hot is a common issue on the busa bikes. I cut the plugs out and rewired the entire charging system as per the schematics from Suzuki. That fixed the charging system as it works great now. The starting issue has been going on all the time which is a different issue. I initially hard a charging system problem. I replaced the Crankshaft Sensor with the Stator because when I tested it with my volt ohm meter it was testing bad. After I replaced it and the rectifier and fixed the hot melted plugs by re-wiring it, the charging issues went away. But now I still have this other problem LOL

[dpc467]

Ugh. Any sense of whether it's a fuel or ignition problem? The melted bits are concerning.

BTW, This is my bike

[dpc467]

Welcome to the .org! Check this thread for dealer mode: Paper clip for dealer mode? | Busa problems.

Thank You!!!

[LC4CARL]

BTW, This is my bike

View attachment 1679169

Wow! What a stunner!

[dpc467]

Wow! What a stunner!

Thanks!! It has been completely gone thru (except engine and wiring harness)
Retro throwback 1986 GSX1100R Paint scheme

[dpc467]

UPDATE: I just did the dealer mode test to pull codes. It just shows "C00" which I think is normal. I am stumped LOL

[dpc467]

Welcome to the .org! Check this thread for dealer mode: Paper clip for dealer mode? | Busa problems.

Checked the codes and shows "C00" which I assume is normal. Basicly shows there is a communication I guess

[Bumblebee]

Welcome and sorry to hear of your woes.....

Is that a fairing kit or a paint job?

A little digging in the search feature shows a few threads on this subject..

How old is the battery? These bikes are very sensitive to voltage and act really odd when they don't get the voltage they need.......

The starting problems start! | Busa problems

So is shimming witha awasher the answer to the one of the biggest problem of the Busa!!!! It appears the over heating problems has been written under many different threads. And the fixes range from so many differnet areas. I guess I'm asking can anyone confirm adding a thicker washer or...

www.hayabusa.org

[dpc467]

Welcome and sorry to hear of your woes.....

Is that a fairing kit or a paint job?

A little digging in the search feature shows a few threads on this subject..

How old is the battery? These bikes are very sensitive to voltage and act really odd when they don't get the voltage they need.......

The starting problems start! | Busa problems

So is shimming witha awasher the answer to the one of the biggest problem of the Busa!!!! It appears the over heating problems has been written under many different threads. And the fixes range from so many differnet areas. I guess I'm asking can anyone confirm adding a thicker washer or...

www.hayabusa.org

This is a

Welcome and sorry to hear of your woes.....

Is that a fairing kit or a paint job?

A little digging in the search feature shows a few threads on this subject..

How old is the battery? These bikes are very sensitive to voltage and act really odd when they don't get the voltage they need.......

The starting problems start! | Busa problems

So is shimming witha awasher the answer to the one of the biggest problem of the Busa!!!! It appears the over heating problems has been written under many different threads. And the fixes range from so many differnet areas. I guess I'm asking can anyone confirm adding a thicker washer or...

www.hayabusa.org

This is a paint job. Scheme from throwback.

The battery is new and voltage is all good. The charging system is GREAT. At the times that it doesn't start and at the times that it does start the voltage is the SAME. When I rode it yesterday and stopped and tried to restart it and it would just turn over the battery was over 13 volts by itself. No issues with the Battery. It never drops below 12.5-12.7 when cranking over.

[dpc467]

Welcome and sorry to hear of your woes.....

Is that a fairing kit or a paint job?

A little digging in the search feature shows a few threads on this subject..

How old is the battery? These bikes are very sensitive to voltage and act really odd when they don't get the voltage they need.......

The starting problems start! | Busa problems

So is shimming witha awasher the answer to the one of the biggest problem of the Busa!!!! It appears the over heating problems has been written under many different threads. And the fixes range from so many differnet areas. I guess I'm asking can anyone confirm adding a thicker washer or...

www.hayabusa.org

Welcome and sorry to hear of your woes.....

Is that a fairing kit or a paint job?

A little digging in the search feature shows a few threads on this subject..

How old is the battery? These bikes are very sensitive to voltage and act really odd when they don't get the voltage they need.......

The starting problems start! | Busa problems

So is shimming witha awasher the answer to the one of the biggest problem of the Busa!!!! It appears the over heating problems has been written under many different threads. And the fixes range from so many differnet areas. I guess I'm asking can anyone confirm adding a thicker washer or...

www.hayabusa.org

Also this is a paint job not just a fairing kit.
Thanks

[Bumblebee]

The battery is new and voltage is all good. The charging system is GREAT. At the times that it doesn't start and at the times that it does start the voltage is the SAME. When I rode it yesterday and stopped and tried to restart it and it would just turn over the battery was over 13 volts by itself. No issues with the Battery. It never drops below 12.5-12.7 when cranking over.

So it cranks but doesn't start...?

That is a stumper.....it doesn't fall into the norm of hot start issues.....have you checked out the fuel pump and injectors?

[Bumblebee]

Also this is a paint job not just a fairing kit.
Thanks

Very nice...not too often do you see such a paint job, normally it's aftermarket fairings....I'm a big fan of the paint.....

[dpc467]

So it cranks but doesn't start...?

That is a stumper.....it doesn't fall into the norm of hot start issues.....have you checked out the fuel pump and injectors?

Everything in the fuel system is new. Like I say, I can ride the bike as long as I want to. Miles and Miles but when its all the way warmed up and you turn it off, It will not start up until the engine is cooled down. Sometimes hours and hours later. If i dont turn it off I can ride it all day long and put lots of miles on it.

I am fixing to upload videos from this morning to show the issues.

[dpc467]

Is there a way to upload videos on this forum??

[dpc467]

oops

[sixpack577]

Have you tried opening the throttle a quarter turn when cranking, when it doesn't want to start?

[sixpack577]

Does it have the external fuel pump, or the pump in the tank?