[s-cars] Faint Knocking

[Bill Noland]

You should check your sparkplugs to be sure that one isn't backing itself out -- a common trick on the UrS. It normally sounds like a noisy lifter. If you haven't done this before -- remove the allen bolts on the cover (which will pop up), set the cover with plug boots aside, then check the plugs tightness with the lug wrench and plug socket, which should be in the tool kit. 

Bill Noland

  This morning it was 44F outside, and I heard a fairly quiet knocking coming from the front of the engine somewhere.  I was in a hurry, but got out the stethescope to listen.  I revved the engine, and it knocked faster, but it sounds too quiet and muffled to be a rod bearing.  Any ideas???  Oil pressure is good.  My butt-dyno says the engine is making the right amount of power...