Rancilio rocky grinder setting

It is most likely that something is blocking the pathway to the grinder. As the Rocky is a direct drive grinder there is no gear that could be broken.
Try to remove the beans from the hopper and inspect the pathway, move the beans that might be under the 'disk'. If that is not working you might have to open the grinder;

• remove all coffee beans
• unscrew the three screws in the bottom of the hopper
• remove the hopper

Now you can see the grinder wheel and tell if it is turning normally.
This might be a good opportunity to give the grinder a thorough cleaning.
Do not soak it in water, just a stiff small brush (e.g. a toothbrush) is the best tool. And perhaps accompanied by a vacuum cleaner :)
If you have been using very 'oily' beans for a long time they might have clogged the grinding wheels.

Good luck,
Villi

Try to redo what you have been doing, but set it to the extremes to see if everything is functioning. If you set the grind say to 4, it should come out very slow or maybe not at all.

Ship it to us we are here in .Los Angeles, CA

Have you tried to hoover up the grinds from time to time, from the grinder blades. The coffee beans and ground can gather under the blades from over time. It should not be a problem though.
For better crema you may want to replace the blades.You should replace every 3-6 years. Rancilio Rocky Grinder Flat blades

I have the same machine with excellent crema. You need to be sure you are using a high quality burr grinder on the fine setting. Also be sure to tamp using a tamper for even compression. The espresso should come out SLOWLY and smoothly... it will end with a great crema.

HI
There are 2 things that can cause this. Either the burrs are bad and need replacing or you grinder is out of adjustment and you need to turn to a finer grind. If you have taken it apart, you are not adjusted close enough so your burrs can't grind fine enough. Readjust the burrs closer together.

The Silvia comes equipped with a "pressurestat" that may have gone out of adjustment. Do a google search on that and you will find numerous pictoral guides on how to do this. The owner's manual that came with the machine (they have electronic versions at espressotec.com, among other places) will also give you basic instructions. Good luck!

Your assumption is correct.
But you do not have to (and you can not) see the grinder wheels to adjust the grinder. The numbers on the bean container indicate the level. All you have to do is to push down the release lever (on the right side) and then turn the container -- towards right for finer grindings (lower number) or to left for coarser coffee. Around 12 is usually suitable for espresso machines.
Willy

I had a problem like this with my first proper Gaggia. Cutting a long story short I found that the coffee I was using wasn't ground finely enough. The Illy stuff that comes in cans was ok, but pretty much everything else preground (incuding Lavazza!) was too coarse.

Sidestep the problem by getting yourslef a Rancilio Rocky grinder then you can adjust the grind in TINY increments for your perfect coffee moment...

there are two class of expresso coffée: one produce crema and the other none. A 9 sec shot, means you are putting ground coffee that are way too coarse. The Silvia requires coffee grounf extremely fine, near powder texture.
Hope this help