The 119 is an exceptionally well engineered engine. I'd be very suspect of a lower end problem short of running out of oil or ingestion of a foreign object. A failed lifter can make a heck of a racket and is a lot more plausible than a wrist pin or bearing. Later 119 engines have plastic oiler tubes that feed the lifters but your early engine should have aluminum tubes that don't fail, leaving only the lifters. Get a solid diagnose and fix it.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff