You were lucky that you got one good injector. My rebuilds were ALL bad. If you do a search you'll see how much pain I went through with my injectors. Do you still have your originals? If so you should have them tested.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL