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[harris48cars]

I'm trying to not get to excited, but. I am noticing that on start up I have what I can only describe as a sound that sounds like a marble rolling around in the engine. It's there at idle until it warms up then goes away, at idle. However it is always there in the 1800 to 2200 rpm range. Took it by the dealer today and of course they don't hear it. This is the same dealer and service writer that told me my 08 SG wasn't wet sumping three times before they finally cried uncle and replaced a defective o-ring. Told the dealer I would bring it back and leave it overnight so they could do a cold start. Anyway, I was hoping one of the other 110 owners will reply telling me theirs does this also.
   Gary

[d o g o l s]

I'm trying to not get to excited, but. I am noticing that on start up I have what I can only describe as a sound that sounds like a marble rolling around in the engine. It's there at idle until it warms up then goes away, at idle. However it is always there in the 1800 to 2200 rpm range. Took it by the dealer today and of course they don't hear it. This is the same dealer and service writer that told me my 08 SG wasn't wet sumping three times before they finally cried uncle and replaced a defective o-ring. Told the dealer I would bring it back and leave it overnight so they could do a cold start. Anyway, I was hoping one of the other 110 owners will reply telling me theirs does this also.
   Gary

 

[Gecko]

 

Sorry, I don't have a picture of a marble rolling around in an engine either.   

Anyway, I've heard several explanations for this particular noise.  It could be short piston skirts that let them rock in the bores - normal according to the MoCO.  Or it could be valve springs hitting the rocker boxes - even though they changed rocker boxes on later models like yours, grinding the old ones for clearance didn't help mine, and nobody can say why they would hit only at a certain narrow rpm range - evidently normal by the way.  Or it could be valve harmonics wherein the certain frequency sets up a sympathetic vibration that exacerbates the glomidian flux resonance which hinders the natual damping properties of the high performance ... Nobody knows and if the factory does they won't do anything about it.  So it's normal.  Mine kind of sounds like an iron Sportster at times.