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- T4fty
- Member Since: 14 May 2025
- Location: Liverpool
- Posts: 4
Blow by td6
Can anybody advise me what is the blowby like on your td6,s first time owner 2017 discovery 5 first edition which has i think excessive blow by from the oil cap when the engine is running
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- Mole HD
- Member Since: 18 Nov 2024
- Location: Orkney Islands
- Posts: 63

Without looking at it, if it's excessive, it could point to a clogged PCV valve (Positive CrankCase Ventilation valve). Without being hands on, it's almost impossible to tell.
That's just a guess since my TD6 has very little blow-by...
Last edited by Mole HD on 15th May 2025 5:52 pm. Edited 1 time in total
Atque in perpetuum, frater. Ave atque vale
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- T4fty
- Member Since: 14 May 2025
- Location: Liverpool
- Posts: 4
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- Mole HD
- Member Since: 18 Nov 2024
- Location: Orkney Islands
- Posts: 63

Yup, that's what I'd say was excessive, I can even hear the blowback as well as see it

Atque in perpetuum, frater. Ave atque vale
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