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nath1
Member Since: 13 Jun 2017
Location: northampton
Posts: 28
  
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Can anyone help me please I have fitted a used 3.0 tdv6 engine in my discovery 4 and I can’t stop the vacuum pump leaking oil onto the exhaust I’ve gone through about 7 gaskets and still leaking does anyone know how to fix this please because I’m ready to pull my hair out
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 24th Oct 2024 4:12 pm |
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Jimbob42
Member Since: 23 Mar 2022
Location: Leicester
Posts: 168
 
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The gasket seems a bit flimsy, I’ve just fitted a new one while mine was out. The originals were both damp on the Land Rover and jag donor.
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| 24th Oct 2024 8:47 pm |
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nath1
Member Since: 13 Jun 2017
Location: northampton
Posts: 28
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Did you tighten it to a specific torque or just tight is tight mine is leaking on to the exhaust and smoking
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| 24th Oct 2024 9:31 pm |
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Jimbob42
Member Since: 23 Mar 2022
Location: Leicester
Posts: 168
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3/8 ratchet and right with a nip, not sure what the torque is. I made sure the surfaces were clean though. Must be a fair leak if it’s getting onto the exhaust?
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| 24th Oct 2024 9:33 pm |
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nath1
Member Since: 13 Jun 2017
Location: northampton
Posts: 28
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I tightened it to 23nm that I found online seemed fine the last few weeks but started leaking again today
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| 24th Oct 2024 9:37 pm |
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nath1
Member Since: 13 Jun 2017
Location: northampton
Posts: 28
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I was thinking of using a discovery 3 vacuum pump as they have a rubber seal not metal one the only other difference is that the discovery 3 pump doesn’t have the return pipe from the pump to the sump so would have to blank it off
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| 24th Oct 2024 9:42 pm |
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Jimbob42
Member Since: 23 Mar 2022
Location: Leicester
Posts: 168
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Yea, I’d say my tightness would be approx 35nm, know by feel. The extra vac port seems completely pointless! Something to do with drawing the oil from the secondary turbo return? Waste of time and even less so when you do the return pipe mod.
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| 24th Oct 2024 9:58 pm |
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nath1
Member Since: 13 Jun 2017
Location: northampton
Posts: 28
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so you already fitted the engine and no leaks, when i did my engine i didn't know i needed to change the gasket until i fitted the engine and it leaked trying to do the gasket with the engine in is not an easy thing to do because you cant see down the back of the engine so after the 6th time of doing it i lost my rag so i cut a hole in the bulkhead under the scuttle panel made the job so much easier just didn't think i would have to do it for an 8th time its not cheap buying all the gaskets i started buying them 3 at a time so i always have one.i would rather leave it till better weather next year but its leaking onto the crossover pipe and burning off.one thing about the gaskets i was using aftermarket gaskets that are shiny metal both sides the genuine gaskets have a fluffy like velvet feel on one side i had best results using genuine ones just double the price. do you think i would get away with just tightening the bolts rather than change the gasket again sorry for the long post just wont to give as much info so to get help
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| 25th Oct 2024 6:44 am |
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ronald.soak
Member Since: 29 Apr 2008
Location: London
Posts: 527
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Having no experience of this at all some things seem to jump out of your posts.
First, the aftermarket gaskets are different and have consistently failed. So why repeatedly use them?. There is no saving if you need to buy several, let alone the time and patience wasted.
I suspect you will never achieve success with them.
Second, the two faces of the genuine gasket are different. This suggests that there is a preferred way to fit them.
Is the use of a gasket sealant not possible?.
The use of a D3 pump sounds a workable idea but I wonder why the rubber gasket was discontinued. Cost?, temperature?.
Good luck
John
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| 25th Oct 2024 3:44 pm |
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nath1
Member Since: 13 Jun 2017
Location: northampton
Posts: 28
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the last gasket that i used was a genuine one and this one has seal better than the others the gasket can only fit one way with fluffy side on the head regarding gasket sealer you are supposed to fit them dry, on inspecting the old original gasket the fluffy side has a 1 or 2mm lip on arias that don't contact the block which makes me think that the fluffy side slightly expands some how to help with sealing. i don't know why they changed from rubber seal to a crush gasket surly rubber is always better maybe they changed it because they re designed the vacuum pump by putting a scavenger pipe on it i think they do it just to be awkward
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| 25th Oct 2024 5:20 pm |
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