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Valve mechanism Volvo B234

Blue smoke on a cold start or oil consumption with no visible leak can point to worn valve guides or hardened valve seals – both are common things to check when the cylinder head on a B234 is opened up. The dual overhead camshaft means the valve mechanism works with more components than simpler engines, and during a rebuild it's easy to underestimate how many small parts are involved.

This category gathers parts for the valve side of the Volvo 940/960 with the B234 engine. The group includes valve seals, valve guides and valve spring washers, along with oil seals, studs, nuts, sleeves and washers. Always check the play in the guides and the condition of the seals against the valve stems before reassembling the cylinder head – that's what determines whether the oil consumption goes away. Since the B234 is its own engine variant, several dimensions differ from the other 900-series engines, so verify the parts against the B234 specifically.

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