Bennehboy
Well-Known Member
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- Huddersfield
Had a long chat today with a mate who's a bit of a TD5 guru.
He suggested that the symptoms I have DO NOT sound like ring issues or stem seals - his reasoning being that I do not have any lumpy running, idle issues, or blue smoke production, in fact the engine runs really well.
So, what could it be???
It turns out that the oil pump has a pressure relief system, basically as rpm increases a sprung loaded bypass opens to lower the oil pressure (think it's at ~3 bar?). He suggests that it's reasonably common for this spring to get gunged up and fail.
Next job is to check the oil pressure...
See diagram:
He suggested that the symptoms I have DO NOT sound like ring issues or stem seals - his reasoning being that I do not have any lumpy running, idle issues, or blue smoke production, in fact the engine runs really well.
So, what could it be???
It turns out that the oil pump has a pressure relief system, basically as rpm increases a sprung loaded bypass opens to lower the oil pressure (think it's at ~3 bar?). He suggests that it's reasonably common for this spring to get gunged up and fail.
Next job is to check the oil pressure...
See diagram:
Last edited: