Rough idle... Wont shut-off after key is out?!

[TrcksR4ME]

Sounds like you are not running on all cylinders as well, that could be the shaking at idle. So definately check all plugs and plug wires. Pull your plugs and see if any of them are fouled out. Fouled out means covered in crap to where they cannot spark or at least not well. That will make the motor run rough and you would then have unburned fuel as well-maybe what your smelling?

How many miles on this motor of yours? Does it smoke at all when you drive, or did it before?

 

[socal chevy]

Just changed all plugs and wires. But ill check connection. It doesnt seem to smoke anymore, but it is still leaking oil like crazy.