FYI, a modern GS can recognise if it's "pinking". The crank sensor can pick up pre-detonation events from inaccuracies in the wave-form. And it would pull up an engine management light.
New R1250RS “Pinking” noise
- Thread starter Caterham07
- Start date
It would be more accurate to say that it detects the onset of pre-ignition and can change the fuelling/ignition to avoid it.
I started this thread last year and thought I would give a final update. I have had the bike out a lot in the last month and enjoying exploring its performance. The noise is still there but I am convinced it is a fluttering of the butterfly vale / valves on the intake. It happens in any gear about 2 cm of throttle on and then clears with more throttle. I had seen this referenced in other postings and even some solutions about rotating the throttle body but I don't want to start tinkering. I am just leaving it as it is and enjoying the bike.
GelandeStress
Registered user
I found you could avoid the noise by riding gentler (but still achieving high speeds) but I didn’t want to be restricted by a fault. My engine replacement under warranty has been flawless and it is smooth as butter.
It deffo seems to be related to the quality/grade/brand of petrol.
I`ve just done a ~500 mile mini-tour of Wales on the GSA, when i set off i filled up with Shell V-power E5.
The bike was quiet and ran normally.
Out in the wilds of rural Wales i had to fill up from a local `Oil4Wales` garage with regular E10.
The bike started pinking under certain riding conditions almost straight away....
I reckon the bikes are tuned right on the borderline of pinking to make the Euro regs and emmision targets etc and any fuel you use which strays from the ideal will tip them into detonation territory.
Lets just hope there isn`t any potential for lasting damage because of this..
I`ve just done a ~500 mile mini-tour of Wales on the GSA, when i set off i filled up with Shell V-power E5.
The bike was quiet and ran normally.
Out in the wilds of rural Wales i had to fill up from a local `Oil4Wales` garage with regular E10.
The bike started pinking under certain riding conditions almost straight away....
I reckon the bikes are tuned right on the borderline of pinking to make the Euro regs and emmision targets etc and any fuel you use which strays from the ideal will tip them into detonation territory.
Lets just hope there isn`t any potential for lasting damage because of this..
On the way back from Devon today along the A303.
Two-up with luggage so fairly well loaded, cruising at just under 70, as soon as one of those long uphill gradients came up and i had to increase the throttle a bit to keep momentum up the engine could be heard to pink like mad. I do not like the engine making that noise for any length of time...
However, snap the throttle open further to accelerate slightly so that the Shiftcam operates and the hi lift cams engage the pinking instantly stops.
Two-up with luggage so fairly well loaded, cruising at just under 70, as soon as one of those long uphill gradients came up and i had to increase the throttle a bit to keep momentum up the engine could be heard to pink like mad. I do not like the engine making that noise for any length of time...
However, snap the throttle open further to accelerate slightly so that the Shiftcam operates and the hi lift cams engage the pinking instantly stops.
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