Originally Posted by Therapy
rebuild 100 hrs ago
Yes; so why, is the mechanic stating " it may be a valve or valve seat" and is going to do a compression test. A broken spring maybe, but it's an audible fault. Mechanically, rings, broken piston, head gasket
, can also cause this issue, but so soon after a rebuild? Not my first choice. It sounds like this mechanic is working backwards.
then injectors and pump rebuild
That's not exactly what the OP stated but regardless the symptoms would still suggest that there's an issue with the injector pump, timing or otherwise. Read the 108 service
manual Chapter 2 Section D, "Fault Finding".