I have to pull my head soon. Oil leak external from headgasket, never been off 300Kish motor that starts up fine in the cold and don't smoke. Injectors nailing like heck, and a piece of I assume carbon came loose and made a HECK of a racket in the combustion chamber for about five minutes 20K ago. Since then it's had a slightly funny idle, which could well be the injectors. Father put new nozzles in them and did not have them pop tested, don't ask me why.
I plan to pour diesel in the ports and check the valves for leaking, if none is found, I'm going to clean it up and put it back on as it sits.
Sound like a plan?
If I find a tweaked valve or cracked pre-chamber, which wouldn't surprise me really, I have nobody around here I trust to rebuild it.
There are a ton of places online offereing rebuilt heads in the $250-$300 range. Should I seek out a VW diesel specific place or can the others that rebuild them for all models be trusted do you think?
I need to get this motor going again for awhile so I can have time to rebuild my TD.
Thoughts?