Just bought a 1000 Fazer

[Falcon 269]

Hi and welcome.

Where did you buy the bike ... from a dealer or private seller?  Either way, if this has been happening since you took delivery, it's their responsibility to fix it or give you a refund.

It sounds like it could be a fuel supply issue but we need more information.  What's the mileage?  Any mods to carbs or exhaust?  Has it been standing around for a while or was it ridden regularly?

Have you tried applying a little choke when the motor is warm to see if it revs without trying to stall then? 

[Roky]

Hello
I bought it from one person, and he will not refound it. That is how it goes in our country 
The bike has been standing for qoute some time. Lets say from august . Apart from my drive home, that was some 30km.
I was very angry that I haven`t tell him to lower the price, but  I just liket the bike to much 
Last year he was driving and he made some 5000km.
The bike has 50000km, and It looks as new. The exhaust ist GPR.
I will try to make one video and upload it that you will be able to see.

Is it possible that it is just because the engine is still cold and that is the reason why?

[Falcon 269]

Perhaps I have misunderstood your first post.

Are you saying that the motor will not rev cleanly just after starting, when it is still cold? 

Did the bike ride fine on your way home after buying it?

[old son]

It sounds like it wont rev when it's cold but OK when hot. Sounds pretty normal to me. Start the bike with the choke, let it warm up a little and slowly close the choke until it idles fine.

[Roky]

I understand that when the bike is cold, I can not rew it right away
but when it runs for lets say one minute it should be warm enough...and when I try to rew it quick, the engine doesnt want that. It looses power around 3000rpm. And if I go smooth there is no problem, I can go to red field.
I will make ma movie today and try to show it.

[PieEater]

How long is it before the problem goes away?

[Falcon 269]

but when it runs for lets say one minute it should be warm enough...and when I try to rew it quick, the engine doesnt want that.

Nothing unusual in that, I think.  You need to give the motor more time to warm up before snapping the throttle open hard.

[unfazed]

 

The engine takes a little longer than a minute even in warm weather to heat up enough to ride cleanly at low revs, more like 5 minutes