Replacing the regulator didn't work. Vito 638 CDI
Mine / lexxflaber
I tried cleaning the fuel pressure regulator, but it didn't work. It was fine at first, then it got worse and worse... I decided to try replacing the rubber seals. It got even worse! In the end, I had to replace the regulator itself. It cost $100. I could have done it right away, but at least I removed the content... :D
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