I'm in the process of replacing the oil separator and all 4 associated lines.
The lower portion of the intake manifold (where the metal butterfly valve is) is sparkling clean, but the upper portion (where the DISA is) has a layer of 'crud' and so does this plastic rail thing (picture). Can you clean this without removing the intake, if so how? Just spray brake cleaner in there? Put everything back together and put SeaFoam in the crankcase, then immediate oil change?
The lower portion of the intake manifold (where the metal butterfly valve is) is sparkling clean, but the upper portion (where the DISA is) has a layer of 'crud' and so does this plastic rail thing (picture). Can you clean this without removing the intake, if so how? Just spray brake cleaner in there? Put everything back together and put SeaFoam in the crankcase, then immediate oil change?
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