 | Home > Tdi > New to forum …. 300tdi oil leak top of engine |
 
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| NFIN02 Member Since: 17 Feb 2022 Location: Londonderry Posts: 96   
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17th Feb 2022 9:10pm |
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| the gamekeeper Member Since: 01 Jan 2010 Location: Surrey Posts: 96  
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Sure it’s oil and not diesel the rubber fuel return pipes perish and leak
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17th Feb 2022 9:18pm |
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| donmacn Member Since: 06 Nov 2017 Location: Nth Scotland Posts: 1841 
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As far as Tdi oil leaks go, that doesn’t look too bad at all tbh. Engine looks pretty clean.
The cyclonic separator - the small canister thing in the middle of your pics (apols if you know that already) - would come off by loosening a couple of jubilee clips, and then one longer bolt into the rocker cover. If you took it off you’d get a clearer idea what’s happening in there. It could be that either of the hoses attached to it are leaking. There’s an O ring around the spigot/pipe where the separator fits into the rocker cover - could be gone? Or it could be that there’s a bit of back pressure in the head/rocker cover pushing oil through. But at least with the separator off, you’d see more clearly. Try Googling 2 things - one is the separator itself so that you can see a pic of it, and understand how it slots into the rocker cover (it’s just a bit of plastic, so always a risk of breaking it). Or just order and fit a new one - they’re pretty rubbish anyway. Second thing would be 300Tdi back pressure - you’ll find videos (at least one on here) - showing that if you remove the oil filler cap, and just sit it in place, it might dance about a lot if there’s too much crank pressure coming through into the head. I’d say that’s a lot less likely though. Donald 1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong (The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html ) 2000 Range Rover P38 4.0L V8 in the past.. RR classic - fitted with 200Tdi 1984 RR classic - V8 with ZF auto box 1993 Discovery 300Tdi not to mention the minis and the Type 2 VW camper... |
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17th Feb 2022 9:41pm |
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| NFIN02 Member Since: 17 Feb 2022 Location: Londonderry Posts: 96
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Thanks for the advice. There was a small puddle (2-3inch) on garage floor this morning and followed it up to that area.will get a better look tomorrow. Underneath all dry and in good order so this stood out for me.
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17th Feb 2022 9:51pm |
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| 8619simon Member Since: 04 Nov 2016 Location: North Wales Posts: 247  
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Worth looking at these as they do perish. They also normally do not sit underneath the acoustic cover, as they are in the picture, so they may be squashed and split, 5 mins to replace if needed. |
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17th Feb 2022 10:16pm |
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| GREENI Member Since: 22 Aug 2010 Location: staffs Posts: 10381
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Smell it, easily identified if it’s diesel.
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17th Feb 2022 10:16pm |
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| NFIN02 Member Since: 17 Feb 2022 Location: Londonderry Posts: 96
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Put a sheet of cardboard under engine last night. Small 2 inch circular puddle this morning. More Photos added from underneath … definitely oil 🤔
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18th Feb 2022 2:48pm |
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| NFIN02 Member Since: 17 Feb 2022 Location: Londonderry Posts: 96
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Put a sheet of cardboard under engine last night. Small 2 inch circular puddle this morning. More Photos added from underneath … definitely oil 🤔
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18th Feb 2022 3:14pm |
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| NFIN02 Member Since: 17 Feb 2022 Location: Londonderry Posts: 96
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18th Feb 2022 7:07pm |
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| karlp606 Member Since: 19 Aug 2021 Location: Hull Posts: 298 
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Think I have the same issue on my tdi 300 - I have a very small drip - literally 2 drips when turning the engine off after a long drive, mine is the seal on the transfer box - very easy to sort but a nightmare to get at so not worth doing.
Yours looks similar - be pleased its a small drip as Ive seen tai's with multiple heavy oil leaks all over. |
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19th Feb 2022 11:50am |
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| jfh Member Since: 08 Jan 2014 Location: West Coast Posts: 358  
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Also worth a look at the lft pump.
Mine leaks onto the block and it then runs down to the gearbox. On short trips, 2 or 3 km, it will drip on the floor but not on longer trips. Heat must have some kind of effect. |
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19th Feb 2022 1:10pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3414  
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Top of the engine could be the top cover gasket. Very easy fix.
Last picture shows some oil coming out from the belhousing wading plug hole. Judging by the colour, it looks like engine oil (gearbos input shaft leak can show through there too). If that is the case, then most likely is the rear crankshaft seal, which is an engine or gearbox out to replace. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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19th Feb 2022 6:23pm |
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| Dave T Member Since: 07 Jun 2013 Location: Glasgow Posts: 490 
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And don’t forget to check the vacuum pump cover plate joint, it’s a common leak point 2015 RRS Autobiography SDV6
1994 Def 90 300tdi |
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20th Feb 2022 5:55am |
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| NFIN02 Member Since: 17 Feb 2022 Location: Londonderry Posts: 96
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Will check this - many thanks much appreciated
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20th Feb 2022 9:27am |
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