Backfiring on overrun

[Speed of Dark]

FZS 1000 Just wandered if you knew what the
problem might be.  Have not touched any settings.
It does everything else really well
Thanks Speed

[Ian-man]

Popping on overrun can mean a small leak on the exhaust system.

From my HTC using Tapatalk

[wessiedave]

You say you haven't touched the settings but is it a standard can ?

[Raymy]

Firing on the overrun means YOU'RE AWESOME.


Keep it up

[Speed of Dark]

You say you haven't touched the settings but is it a standard can ?

Yes the can is standard
The bike is as completely standard

[wessiedave]

Try removing the can and cleaning the joint area, copaslip or grease the connection a little bit and see if that cures it

[Camshaft]

Mine's allways popping anything over 3.5rpm and I love it...........!!!!

[Speed of Dark]

Try removing the can and cleaning the joint area, copaslip or grease the connection a little bit and see if that cures it

Thanks I will give it a go
I can say it has never popped until last year
It will overrun ok for a bit but seems to build up to a bit of a bang then it's ok for a bit longer bang again
can it be un burnt fuel firing off in the can?

[VNA - BMW Wank]

Is it backfiring or just popping.  Big difference.

[Speed of Dark]

Is it backfiring or just popping.  Big difference.

Definitely backfiring not popping

Speed