Hello, nice to meet you, I did their respective maintenance on these injectors 4 months ago, and look, they still look clean, the failure that the engine had was due to a single injector, apparently the rubber seal did not seal well in the engine chamber I could swear they didn't change this seal, because it looks different than the ones the other injectors have, well I changed these seals and it looked good.
RE: Corrigiendo una entrada de aire por el sello de un inyector de mi carro // Correcting an air inlet through an injector gasket in my car