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6th October 2016, 21:00 | #21 |
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Further investigation. After the recent oil change after doing the timing belts, I looked into the camshaft cover where the oil cap is. Notice the tremendous amount of "mayo" now.
I will update again when I have another update. |
6th October 2016, 22:52 | #22 |
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I would check the inlet manifold gaskets.
I've had a number of attempts at overcoming a similar issue. http://www.the75andztclub.co.uk/foru...+gasket&page=2 My last attempt at replacing these has been the most succesfull, thanks to advice from Simon (SD1too) in terms of the tightening sequence. It lasted around 3 months, but has now started leaking again, albeit at a much lesser rate than previously. To me it's clear they are only just capable of doing the job. |
7th October 2016, 11:49 | #23 | |
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Quote:
Thanks for the info, very handy to have. however I have not touched the inlet manifolds or thermostat or water pump since I started this thread so I don't think this applies to me as it would not explain the pressure build up I get in the expansion tank (over 19 PSI measured) |
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13th August 2018, 01:57 | #24 |
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Update on the coolant loss. I actually put some head gasket sealant and the leak is gone (I was loosing around 250ml per 30 mins trip now).
What I actually did is to bypass the heating matrix and the oil cooler so that when I put the sealant I would have less issue. I then drained the coolant, rinsed and filled with distilled water the use the product called Blue Devil poor and go. I ran this for a few days until the white smoke out the tail pipe went away, then drained and rinsed the coolant and put back coolant into it. Roughly 4 weeks into it, no loss still, plenty of heat and no more coolant in the oil when doing an oil change. Of note, I am running a Kaiser aluminium thermostat housing and associated pipes (made for a Rover 75 car) and I did not remove the thermostat in this process. |
13th August 2018, 06:42 | #25 |
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I have had success with using a sealer in my 1.8T, in spite of all the contrary advice on this forum. I used Wondarweld, and it cured my 1.8T for good, until another issue arose, I forget which
so sometimes this remedy works, no doubt! Your inlet manifold gaskets can be responsible for water loss, but never for excess pressure. The inlet manifold sealing design is flawed, at best. Incompetent is - however - most likely closer to home. Glad you seem to have cured the problem. Just on a side note. Distilled water, nothing wrong with it. But it is really an overkill. If your system works, the water is in there for good (yeah, I know, I know, it is a Rover!) Comparing this with a kettle that scales, or a geyser that does the same, is not relevant, as these devices see fresh water being filled repeatedly, thus an accumulation of scale from thousands of liters of water! That is obviously not the case here.
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13th August 2018, 14:13 | #26 |
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It does indeed. The proviso is to use it correctly by letting it do the job and then remove every trace. The OP did just that, so the lazy man problems from secondary blockages are avoided. Of course there are good sealant formulas and bad ones. The one that gets slated most on here is a bad one. TC |
15th August 2018, 21:23 | #27 | |
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Hi. Add some oil to cylinder 3 to determine if it is rings or the valves that are causing the low compression on that cylinder. It may just be sticky piston rings, or it could be a badly seating valve. I do not think the water consumption is being caused by the engine using it I think you will find you have a leak somewhere. I have just gone through a similar problem with my 75 Diesel. Where it was leaving a slight puddle under its self sometimes. Eventually tracked it down to the stat housing sealing rubber on the six month old thermostat. Took me over a month and every test in the book. Eventually I started changing each component one at a time was very lucky that the stat and housing was item three on my list. I now find myself with spare hoses and rads for the car, more spares for the shelf. Alan Sent from my iPad using Tapatalk |
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16th August 2018, 18:22 | #28 | |
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Thanks. I was also getting coolant in my oil, a fair amount, this has stoped since I changed the oil 4 weeks after doing the coolant sealer. I will have to rerun the pressure system test to see if it is pressurizing itself again as well in addition to adding the oil to do a compression test. |
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