Interuption on the low rpm

[mope]

Hello guys,

Last year i bought a Yamaha FZ6 (2005) 600cc. On my first ride appeared the following issue which I will try to describe with maximum details:
1. When the engine was cold everything worked perfectly.
2. When the optimal temperature was reached the engine stops working every time I touch throttle.
3. I spoke with my friend who refer me a service specialist. This guy told me that the issue came from the automatic choke. As per him the issue was that choke was blocked/contaminated.
4. He had cleaned it seems that the issue was gone…until this year 
On my first ride this year the same (or almost the same) issue appeared again. When I touch the throttle the engine starts fading (only on the low rpm). There is no issue when the engine works over 3000rpm.
So I am wondering if someone has/had the same issue and if so how it should be resolved.
Amy information will be much appreciated.

Simeon

 

[Cloggy]

:welcome: to the forum Simeon :thumbup:

Well the first thing that comes to mind is the TPS (Throttle position sensor), as there was a recall on 2004/2005 bikes to fix this problem. Here's the thread if you want to read more. Good luck

 

[Motogiro]

I agree with Cloggy on this. I would suspect the TPS. There is no choke on the 2004-2009 FZ6. The cold mixture is controlled by the ECU and fuel injection.

 

[Erci]

There is no choke on the 2004-2009 FZ6.

That's impossible!! Then what did the mechanic clean?! .. oh wait
This is why I hate taking any of my stuff in for service.

 

[FinalImpact]

There is a chance this could be induced by vacuum leak too.
Another member had issues with a hose being worn through causing a vacuum leak. It was so small it only impacted idle speed and went unnoticed at higher RPMs. Because your bike OK at high idle when cold, this is something to keep in mind as it could be masked at high idle.

Under the fuel tank are the throttle bodies. Each has about 8 lines. 4 are for tuning and are plugged. 4 are all connected together and route to the vacuum sensor. There are others but you'll have to go digging to find them.

Oh and ya, good luck getting the Choke fixed!:rof::rof::rof:

 

[mope]

lol, thank you for the great ideas folks Hope i will manage to fix the bug without another "service specialists" :rockon:I will appreciate if you share any other ideas about that. Write to you soon to let you know what happen.