Something loose?

[Mightytharg]

Darn it.

Sounds as though something's loose on my 2010 GSA - noticeable especially when accelerating between 2-3k I'm hearing a sound as if as if a bolt has come loose and I've got some metal on metal contact somewhere under the tank.

Any suggestions of likely candidates before I get the spanners out?

Cheers

 

[Mr K]

Darn it.

Sounds as though something's loose on my 2010 GSA - noticeable especially when accelerating between 2-3k I'm hearing a sound as if as if a bolt has come loose and I've got some metal on metal contact somewhere under the tank.

Any suggestions of likely candidates before I get the spanners out?

Cheers

In which gear, or all?

 

[Mightytharg]

Good question.

I'm tempted to say all - but definitely noticeable in bottom 4 gears, past that wind noise/helmet/ear plugs would make it difficult to say.

 

[trainman]

if its def only under acceleration (ie not when braking or clutch in coasting), i would look around the fork tops and the front shock, the front will lift and the wishbone and fork brace will move a fair bit, look for any signs of contact between moving parts and the main frame bits

 

[Steve E]

Sounds like pre-ignition otherwise known as Pinking to me. But I could be wrong.

Steve

 

[Mightytharg]

Sounds like pre-ignition otherwise known as Pinking to me. But I could be wrong.

Steve

Doesnt sound like pinking - where I've had that on an engine before it's been a more "tinkling" sound, whereas this sounds more like 2 metallic surfaces knocking against each other. If this was one of me old brit bikes I'd be thinking I had a loose tank bolt or head steady bolt.

I do reckon the bike is running way too lean but if this is pinking it's the worst I've ever heard.

 

[DrFarkoff]

fit an accelerator module or recyclizer

they fool the ECU into thinking it's colder and it enrichens the mixture to about 13 : 1 ish instead of BM's 15: 1