New member introduction and Busa question

O

OldBusaGuy

Registered
Good evening fellow Busa enthusiasts.

As my username implies, I'm a mature Busa owner. Over the years I've owned quite a few superbikes, starting in the mid 70's with a Kawasaki Z1-900 to a couple of more of those and a KZ-1000. In the early 80's I picked up a like new Yamaha XS-1100 special that I still have. I also have a Harley Road King that has helped me get over the need for speed so much.

But I remember back in the late 90's hearing about the new Hayabusa and seeing how cheap they were, I wanted one but my desire for self preservation took over and I resisted the urge to buy one.

Fast forward over 20 years and I feel like I can finally control my need for speed enough to stay out of trouble on one. So after some searching I ended up buying a very low mileage 2004 blue and silver Busa. As far as I know it's pretty much bone stock with a little over 6,000 miles on it.

The guy that sold it to me told me that it will start but won't stay running. I have it home now and have played around with is just enough to know that when I first hit the starter it will fire on all cylinders but probably only for a couple of cycles and then it dies. Previous owner cleaned the tank, changed out the fuel pump, put new injectors in it (twice), new plugs (3 times), and it had a power commander which he took off. He also replaced the ECM module?

I've heard that it may have some kind of tip over kill switch or kick stand switch that may disable it.

It will be spring before I'll be able to do much riding as I live in the great white north but if anyone has any ideas of what I should be looking for, I'm all ears.

Thanks in advance for any ideas.

Busa pic.jpg
 
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The previous owner didn't say if he had checked pressure or not. I'm not really up on fuel injected bikes. I figure that I can check to see if something simple was overlooked and if I can't figure it out, there's always the dealer option.
 
BigBSBusa said:
You'll find we tend to be anti-dealer for service/maintenance. :D Battery voltage? Idle RPM?
Click to expand...
I'm with you on the anti dealer, that's why I'm here. But as a last resort, I'll consider anything. No idle RPM as it won't idle that long. Battery is in new and in the green on my trickle charger but I haven't put a tester to it yet.
 
Welcome, looks like a nice example. Maybe dropped on its right side? Are those tire marks over the kanji? Yes there is a sidestand switch but it won’t allow the bike to start, not run poorly. I’d hate to get a bike that’s had several injectors and plugs and a fuel pump ‘ECM’ replaced on a bike with such low miles. Good luck!
 
on a side note
it's got a Ti-Force exhaust
one of the best, and long out of business, that pipe has a great power curve, and is really rare anymore.
As for the problem, as said, we'll need more info.
But, if the engine actually starts and runs momentarily before dying...it's not the tip over switch, it will only crank but not run if the switch was stuck or disconnected.

welcome to the org
 
Good luck with sorting it out as I am sure it will run as good as it looks once the gremlin is found.
I must say... to me the Gen 1 is still the best looking generation when the color combo is right, and, you have a great color combo!

I never thought of hanging a Busa to load it.
 
Welcome....

The joys of a low mile older bike.....lots of nasty can happen over time...

It definitely sounds like fueling...even though the previous owner said all this was changed, if it sat for 5 yrs afterwards, it will all be gummed up, fuel being left in the system for that long does that as I'm perfectly sure you are aware of.

Sometimes in this case, a dealership might be the way to go if for nothing else to get the thing running as a baseline-you could do the finetuning after.

The good news is this bike is definitely worth fixing as it is a fine example of a Gen 1.
 
Gen1 has the 'fast idle/choke' lever; does moving that change anything?

The fuel pump goes into a housing that bolts into the tank; I wonder if it is gummed up in there, and not cleaned or even checked when the previous owner replaced the pump and injectors?
As the bike seems to run off of the fuel pump prime, then not have enough fuel to stay running.

Is the FI light on the dash on or blinking?

The bike doesn't have an aftermarket alarm on it, does it?
 
WuzzaCBXRider said:
Welcome, looks like a nice example. Maybe dropped on its right side? Are those tire marks over the kanji? Yes there is a sidestand switch but it won’t allow the bike to start, not run poorly. I’d hate to get a bike that’s had several injectors and plugs and a fuel pump ‘ECM’ replaced on a bike with such low miles. Good luck!
Click to expand...
What's a Kanji?
 
sixpack577 said:
on a side note
it's got a Ti-Force exhaust
one of the best, and long out of business, that pipe has a great power curve, and is really rare anymore.
As for the problem, as said, we'll need more info.
But, if the engine actually starts and runs momentarily before dying...it's not the tip over switch, it will only crank but not run if the switch was stuck or disconnected.

welcome to the org
Click to expand...
I kind of figured that if it was some kind of safety switch, it wouldn't fire at all. And it sounds like that is the case.
 
Zerks said:
Good luck with sorting it out as I am sure it will run as good as it looks once the gremlin is found.
I must say... to me the Gen 1 is still the best looking generation when the color combo is right, and, you have a great color combo!

I never thought of hanging a Busa to load it.
Click to expand...
I didn't have help unloading it, so I just lifted it with my loader tractor and pulled the trailer out of the way. Worked like a champ.
 
Bumblebee said:
Welcome....

The joys of a low mile older bike.....lots of nasty can happen over time...

It definitely sounds like fueling...even though the previous owner said all this was changed, if it sat for 5 yrs afterwards, it will all be gummed up, fuel being left in the system for that long does that as I'm perfectly sure you are aware of.

Sometimes in this case, a dealership might be the way to go if for nothing else to get the thing running as a baseline-you could do the finetuning after.

The good news is this bike is definitely worth fixing as it is a fine example of a Gen 1.
Click to expand...
The seller told me that it ran fine when he put it away for the winter and then didn't want to run in the spring. I've had that with small engines due to using gasoline with alcohol in it, but not with motorcycles. I'm not a big fan of taking things to the dealer, but will if I can't fix it myself.
 
OldBusaGuy said:
The seller told me that it ran fine when he put it away for the winter and then didn't want to run in the spring. I've had that with small engines due to using gasoline with alcohol in it, but not with motorcycles. I'm not a big fan of taking things to the dealer, but will if I can't fix it myself.
Click to expand...

That is good though, the fuel system just needs cleaned correctly.
If you have problems after, make sure you have oem injectors.
 
sixpack577 said:
Gen1 has the 'fast idle/choke' lever; does moving that change anything?

The fuel pump goes into a housing that bolts into the tank; I wonder if it is gummed up in there, and not cleaned or even checked when the previous owner replaced the pump and injectors?
As the bike seems to run off of the fuel pump prime, then not have enough fuel to stay running.

Is the FI light on the dash on or blinking?

The bike doesn't have an aftermarket alarm on it, does it?
Click to expand...
I watched a video of cleaning a screen by the fuel pump and am wondering if the previous owner replaced the pump and didn't clean the screen.
 
I'd be looking at a fuel pump/pressure as a start. Also the fuel rails have little fine mesh sieves as a final defense against anything small enough to get past the fuel filter. They can get gummed up and prevent all the fuel getting to the injectors. Think a coffee filter. That "drip" can be more or less depending on how clean that coffee filter is.
 
TallTom said:
I'd be looking at a fuel pump/pressure as a start. Also the fuel rails have little fine mesh sieves as a final defense against anything small enough to get past the fuel filter. They can get gummed up and prevent all the fuel getting to the injectors. Think a coffee filter. That "drip" can be more or less depending on how clean that coffee filter is.
Click to expand...

Those screens aren't in the fuel rail, there is one in the end of each injector.
 
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