i think i may have scared it myself. its misfiring when cold and now its misfiring in the 3,000 RPMS when in 3rd gear and i started smoking pretty bad, even worse when i start misfiring. the knock is gone when i start it up in the cold or if i add something to lube up my diesel and idle after a long drive. i think it might be sticking.

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84 300sd 2.47 dif 360k
26 mpg needs lots of love
given to me in pitty

89 civic hatchback auto 140k
33mpgs soon to be low to mid 40's
been in the family since mile 1

85 300d with unknown knock. driven over 30k with knock and still going. sold for $800