mbm Posted July 13, 2010 Share Posted July 13, 2010 Hi all, A litle help, please. My 200 Tdi is leaking in top of water pump. The enclosed pictures were taken 10 kms after steam cleaning the engine. Thanks! Quote Link to comment Share on other sites More sharing options...
redneck Posted July 13, 2010 Share Posted July 13, 2010 Looks like its weeping from the gasket after years of oil leaking over it from the rocker gasket/filler cap i.e nothing to worry about. If it stops put some more oil in the engine Quote Link to comment Share on other sites More sharing options...
Andy Posted July 13, 2010 Share Posted July 13, 2010 There isn't any oil in the engine there! must just be soaked into the gasket & weeping out as said. Quote Link to comment Share on other sites More sharing options...
mbm Posted July 13, 2010 Author Share Posted July 13, 2010 There shouldn't be any oil! The engine was rebuilt 35000 kms ago, top professional work, the best material... Well maintained, used mostly off road. It forms a "pond" over the place I must steam clean time to time. Have no oil/water mixed, the oil consumption is very low, no overheating. The oil seems coming fom inside, bottom to top... Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted July 14, 2010 Share Posted July 14, 2010 My TDi knowledge is minimal but is it possible the bolt has penetrated an oilway or somesuch and oil is coming back up the bolt hole and weeping out through the gasket? I know some engines you can put the wrong length bolt into the hole and cause damage, no idea if it's likely or even possible here but can't think of much else. Quote Link to comment Share on other sites More sharing options...
mbm Posted July 14, 2010 Author Share Posted July 14, 2010 Fridge, I think you may have the better guess. Next Saturday I 'll undo the bolt and run the engine a litle, to see what happens. Quote Link to comment Share on other sites More sharing options...
mbm Posted July 19, 2010 Author Share Posted July 19, 2010 I wasn't able to fully remove the bolt as it hits the fan. As it was released water replaced oil, as expected. The bolt had no signs of oil leakage, nor water. Tightened to the correct torque... and a little of road to test everything seems to be ok! Funny... Quote Link to comment Share on other sites More sharing options...
Les Henson Posted July 19, 2010 Share Posted July 19, 2010 Is this the same position as in your picture? If so, then there would originally have been a long stud there with a 13mm nut on it. The stud (and therefore your bolt), will pass right through the pump, timing cover, and timing chest - screwed into the engine block. The rear timing chest has a gasket between it and the engine block, and this is the only place where engine oil is present. It may be that there's a slight oil leak there and oil is passing the gasket and then migrating up the bolt thread. Trying to think of a fix - threadlock/torqueseal wouldn't work, as it would be working 'before' the leak. Best I can think of is remove the bolt, blast brake and clutch cleaner in the hole, wait for it evaporate, then a blob of RTV and replace the bolt. Hopefully, the rtv will migrate up the bolt and effect a seal. Alternatively - http://forums.lr4x4.com/index.php?showtopic=42950 Les Quote Link to comment Share on other sites More sharing options...
mbm Posted July 21, 2010 Author Share Posted July 21, 2010 Hi Les, Yes it is in the same position. But in the last 200Kms the leak vanished, perhaps the correct torque was the cure. If it comes again I'll try the fix you propose, I have somewhere "high pressure" RTV. Thanks a lot, Quote Link to comment Share on other sites More sharing options...
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