Today I fitted the brass 10-12-10 t piece from ebay via China. This replaces the plastic 12-12-12 fitting I bought when the old one broke up on removal.
All is now fitted and so far so good with no pending or actual ECU faults
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The t piece fitted and the last rocker breather to be added.
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JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"