Spent the morning inspecting and testing most all componants that could be tested of the turbo and have found no faults with pressure switch, switchover valve, or charge pressure control valve. The alda is probably ok but I could only produce 6 psi @ 4000 rpm. You can feel a bit of boost so I do think the fuel is being enriched but only up to 6 psi.

I had the crossover pipe off and reved the engine until the turbo started blowing lots of air, not as much as I expected, felt like an air hose blowing 100 psi in your face!

There was a small puddle of fresh oil laying in the bottom of the compressor housing and with 235K on this turbo, my guess is that it is time to rebuild, or buy a rebuild.

Question: Are there expensive specialized tools needed to rebuild this Garrett TB 03, can the average backyard wrench do it himself?

$700 to $900 for a rebuild is not in my walet for a while but would rather buy the needed parts and go at it!

What tipically is replaced in a turbo aside from bearings, seals, etc.???