What's your mpg? Cost of testing is same as putting in new nozzles. Your injectors are probably ok. If you don't have 150.00 or so now you can wait. My car runs and idles a little nicer with new nozzles from CSEAN. Its an 87 300TD with 603. It still smokes a little at startup though. 135000 on the clock on mine.

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What Would Rudolph Do?
1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius