Inline 4: Rattle (sounds like vtwin) on acceleration only. | GTAMotorcycle.com

Inline 4: Rattle (sounds like vtwin) on acceleration only.

Corsara

Corsara

Well-known member
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What could be causing this rattling? It sounds like a v-twin, happens only on acceleration. Isn't there on reving the engine with pulled clutch, and it doesn't happen on deceleration either. But give it a little gas (little or wot, don't matter), it is "arrrrrrrrrrrrrr", kinda like a vtwin. No loss in power.

What is it?

Bike is K3 Gixxer 1000 btw.
 
Not sure... but the one time my old ZX6R sounded like a V twin it was running on 2 cylinders... so I would say check your plug wires... and check your plugs...
 
Freestyle72 said:
Not sure... but the one time my old ZX6R sounded like a V twin it was running on 2 cylinders... so I would say check your plug wires... and check your plugs...
Click to expand...

Did the ZX6R sound like a v twin also when just revving it without load?
 
Mr.Azim said:
Depends how 'awful' it sounds.... a video/audio clip (if you can get one recorded somehow) might open more diagnosis from other members.
Click to expand...

I tried to make a video with my Drift HD. Unfortunately, while the video is superb, the audio sucks :(

The rattle starts in any gear, maybe even more pronounced if you're at low speed in high gear---then give it a little gas (or a lot of gas)----it's like "ar-r-r-r-r-r-r-r-" while accelerating, the sound is not smooth and nice. Same in low gear---it doesn't seem like it lost power or anything, it's just arh-rh-rh-rh-rh-rh-r while accelerating.

Again---it happens only under load, big or small doesn't matter.
 
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