These days, unless you are stepping up to more expensive nozzles, those super-tight precision and matched tolerances of (made-in-x) bosch nozzles are a crap shoot with a high leak rate NEW. It's like they don't care anymore and expect people to fix them.

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1985 300TD 1981 Scirocco 1.6D conv 1986 Golf 1.6D 2003 Golf TDI