One thing to let you know... I had a tech spend countless hours on one of these engines for the same symptoms... We recalibrated the pump, replaced the injectors, and checked the timing chain and performed a compression test......Nothing fixed it untill I was told by MB DOC that they liked to bend the connecting rods in the engine. We pulled the cyl head and there it was, 2 bent rods. Replaced them and all was cured (about 5K dollars for alot of work)

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
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MERCEDES SPECIALIST 8 YRS
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