Have you cleaned the lines and banjo bolts, and checked the turbo switchover valve? also is the waste gate sticking open? Have you pulled the "u" tube and checked for spinning and play (with the engine off of course)? These turbo's are really robust and are not a common failure point.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D