Update-

Pulled passenger's side valve cover

While working found bolt lodged between exhaust manifold and heat shield.
-Removed loose bolt

Set crankshaft to -0-

Verified passengers camshaft in time-
RESULTS: Timing notch lined up with timing indicator.

Reinstalled valve cover

Restarted engine and let idle for ~1 minute
RESULTS: Rapid knock did not reoccur
Persistance of intermittant single knock ~ 5 second intervals




Is this possibly an injector issue? When I had the injectors out during the rebuild, I noticed that 2 had been replaceded by the P.O.

The injectors are the only thing I can think of now since they're now the only link in the chain which wasn't replaced or refurbed (the tensioner was the other)

If anyone has any ideas what could cause this syptom in a 117 560engine I'd appreciate the help!



Scott