Richard took #2 and 3 Injectors and had them tested. They are good. They were just replaced in the beginning of October. He did change them around and I think there was no change in one cylinder when he opened the injector, can't recall which one. I had a used engine that I purchased from ASAP Motors in Houston dropped in at the end of February this year. Engine cranks right up when cold 20 degrees without block heater plugged up and she uses very little oil. The old engine consumed huge amounts of oil and and was very hard start in cold weather. I had to use the block heater. This leads me to believe that the engine is good. Is there something else other than a complete rebuild of IP if one cylinder is bad on IP. Was told by independant MB mechanic that cylinder 2 and 3 are weak. This rough idle is just too rough! Thanks for any input

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Thanks,
T.C.
1979 300D non-turbo silver