Home > Technical (L322) > Smoke screen fix by scavange pump modification |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
I think its time to share information about rebuilding vacuum oil pump on 4,4TDV8.
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20th Oct 2023 9:01pm |
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Phoenix Member Since: 16 May 2022 Location: Gone Posts: 1631 |
Nice modification - have you checked the brake booster for oil ingress? |
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20th Oct 2023 9:40pm |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
Yes, this valve inside oil filter vessel quite often may be loose, just unclickt from sitting position. Each oil change need to pay attention to this valve. If oil drain channel is not close properly, lot of oil will pass into the oil separator during engine running. Separator can not separate so much oil and signifficant amount of oil may pass into the intake system.
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21st Oct 2023 9:44am |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
And this is the oil channel Iam talking about, its made for pump shaft and vacuum side lubrication. There is a regular engine oil pressure when engine is running.
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21st Oct 2023 10:01am |
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kevinp Member Since: 28 Sep 2019 Location: Telford Posts: 1196 |
Well I think this is the only explanation there is as to why all of a sudden it was smokey and using oil and after I reattached it tightly by bending the tangs and using a small socket to tap it into place it no longer does it.
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21st Oct 2023 10:09am |
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DrRob Member Since: 16 Apr 2015 Location: Petersfield, Hampshire Posts: 4295 |
If I’m reading this correctly, in this picture the spring is not seated correctly as you can see it’s slightly off centre of the mounting hole? Correct? Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory" 2025MY Defender D350 90 in Silicon Silver on coils 1974 Series 3 Lightweight = "Millie" Many, many other Landies over the years My preferred specialist: www.glenrands.co.uk -------------------------------------------------- |
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21st Oct 2023 3:00pm |
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kevinp Member Since: 28 Sep 2019 Location: Telford Posts: 1196 |
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21st Oct 2023 3:48pm |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
Yes Rob, correct, it was in wrong position. This picture was done immidietly after removing oil filter at my first oil change. Its unknow was it in wrong place all the time or it was moving away during filter removing. Exactly the same case as kevinp explain. |
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21st Oct 2023 4:01pm |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3162 |
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22nd Oct 2023 11:49am |
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kevinp Member Since: 28 Sep 2019 Location: Telford Posts: 1196 |
Often wondered about that JayGee. Genuine one looks like it might not 'grab' on the spring valve and distort it, if that's what happening. |
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22nd Oct 2023 6:24pm |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3162 |
My thought is that the extended section may prevent the main body diameter from pressing down on the spring assembly? 2012 TDV8 Vogue (L322) |
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23rd Oct 2023 7:21am |
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DrRob Member Since: 16 Apr 2015 Location: Petersfield, Hampshire Posts: 4295 |
https://www.fullfatrr.com/forum/topic68232.html Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
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27th Oct 2023 8:42pm |
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3162 |
Pulled the oil release spring and cap just now and the rubber on the cap was very hard so replaced it with an M5 short cap head screw and some PTFE tape to seal it. 5mm is just enough to cut it's way into the alloy housing for a secure fit. 2012 TDV8 Vogue (L322) |
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12th Dec 2023 11:54am |
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jaguar3 Member Since: 25 Sep 2022 Location: Estonia Posts: 193 |
Half year with vacuum pump mod.
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12th Apr 2024 8:34am |
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