Hi Guys,

I have a new Tenere 660 (xt660z) and at approx 600km on the clock i noticed it has now developed a loud 'Jackhammer' type knocking under load. It occurs at pretty much any rpms, so its not prone to just low rpm and lugging it (although it sounds similar to 'big end' knocking) it can happen even at 4-4,500 rpm and simply opening the throttle will induce this sound/sensation. To me it doesn't sound right and it wasn't apparent in the first 600 km of use. I initially thought it might be fuel problem/pre-detonation problem, so i re-fuelled and still the problem is there. i always use 98 octane. It doesn't make the 'jackhammer' knocking sounds when idling or just coasting along or even down a hill with closed throttle, even if the rpms are highish, Its only under load and its very loud and knock like. Any idea's? Need help.