Much worse, this was a regular 350 GM gasoline V8 hastily converted to diesel. It never ever worked well enough to achieve POS status, but had lots of buyers because of the desire for fuel economy.
This engine was a main contributer to the destruction of the GM reputation for reliability, and set back acceptance of the diesel in a passenger vehicle decades in America.
Sorry Bob... Not true. The 350 diesel you are talking about, while never a stellar performer, was indeed a true diesel through and through. It is a common misbelief that this was a gas engine converted to diesel - but that is far from the truth. What the real story was that GM's Oldsmobile division made the engine block and cylinder head castings very similar to the gasoline engine, they were done that way so the diesel cars could use all the same bolt-on accessories. The internals were all quite different and of substantial strength as you would normally find in a diesel engine.
Basically the largest downfall of this engine was the public that bought them soley on the basis of saving a few dollars at the pumps. The engines ran pretty well for what they were, but as you can imagine, they were down on power from the gasoline powered cars. I believe that these little diesels only put out 120-125 hp at best.
Fuel contamination was a HUGE problem with these cars.
As I recall the first ones did not have a water separator on them (GM screwup there).. Also there were the dolts that accidently fueled them up with unleaded gasoline (my next door neighbor's wife did that) and immediately bflew both headgaskets and caused a number of othere prolems in the fuel system and injectors. She did say that while the car was very noisey, it was really "peppy" for a few blocks before it stalled,,,
Getting up to temp. No engine likes being worked hard before all the parts are warmed up and friendly. Diesels are even moreso in that category..
Many people did not run them long enough to get the up to temperature before wringing the little engine's neck while they floored them to get them up to highway speeds as fast as they were accustomed to.
So - that's a little history lesson on the 5.7 GM Diesel. Too bad Americans (for the most part) are so inept when it comes to the proper treatment of an engine. This makes them even less likely to purchase a diesel...