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Piezoelectric high-precision injectors get very gunked-up badly. I bet the pintle head and shaft is black as coal. Gumout Regane with PEA will clean it out, after three treatments.
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2007 BMW Z4 3.0si - Hellrot
2010 BMW X6 M - Space Grey
Last edited by 1er_vert; 12-22-2021 at 05:03 PM..
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