[Solved] Renault Master 07R 2.5DCI 100 - disappearing fluid from the cooling system ..

Welcome!
Day already matches with the fault in the master. Before I decide to spend more I decided to seek your advice.
Namely: for several weeks the fluid from the reservoir has disappeared. About a liter for 700-1000km. The engine has been viewed many times - no leaks. The mechanic washed the engine and zorbil 4 thousand km and we were looking for a leak - nothing.
At some point we found butter mayonnaise in a turbo radiator pipe.
In the net I found that it could be the exhaust gas cooler of the EGR valve.
The new cooler for this model is PLN 2,100, we also came up with a mechanic to buy a utility and mount the utility.
We did so too. Unfortunately, the fluid is still decreasing, especially when driving around the city - as if less on the route (and this master makes routes after 1-2 thousand km at a time).
Engine: zero problems He works as he worked, does not smoke, everything is as it was, low combustion - normal. In the morning it fires without smoke. The car is from 2007 and has traveled almost 600 thousand km, of which it has been making routes for 1-2 thousand km on highways for 4 years. The engine was only replaced candle, turbo (checked now - it is dry and good), and air flow.
and now a series of questions for you:
1. How to diagnose a damaged radiator? I have a radiator removed from my car, I wonder how to determine this leak?
2. how to clean the inside radiator?
3. are there any services regenerating exhaust gas coolers?
4. Can it be the head gasket? How to diagnose it correctly? because again I will go to the mechanic and it will break with 2 thousand and if the radiator is damaged then the problem will remain

I offer good Scotch whiskey for helping me diagnose correctly
Best regards!

The liquid disappears and what comes with oil, you checked the oil level

From what I checked - no. But I will look more closely. The coolant is not dirty or stinks either.

danyxm wrote:

How to diagnose a damaged radiator? I have a radiator removed from my car, I wonder how to determine this leak?

Close one hole and blow into the other - of course under water, just like you are looking for a hole in an inner tube.

Thanks gentlemen!

I looked a little bit, I answered - answering your questions:
1. I don't see any liquid in oil, rather oil has been lost rather than arrived, although I do not know exactly. I changed oil about 7,000 km ago, it is usually 3/4 on the indicator, today I said it is 1/3 on the dipstick. That is normal.

2. is the gray butter in the pipe going (I think) to the turbo radiator


3. exhaust pipe - black and dry, soot only
4th buddy was there and he went to the pneumothorax - there was some butter there too - so much that the car has been charged 600,000 km and nothing was ever done there
5. I have removed the cooler, soaked the solvent in a solvent, tomorrow maybe I can somehow test or liquid.
I bought 3 coolers from the momentum, I also want to test the one I took from my car and some other.

It's all about diagnosing - leaking or not leaking.
I would prefer it to be liquid:]

The oil filler cap has no tarnish or sludge. Fluid loss is greater in the city than on the route.
I checked the refrigerator - the test consisting of blowing in it and checking for leaks was successful - because I have no idea how to check its tightness otherwise.
A friend told me to pour some liquid to repair the gaskets and thus check if it will be a gasket or not - a good idea? Flood and if you stop taking the liquid just go to replace the seals?
I can do the exchange only in the middle of August - it would be good if the car could reach this exchange ..
The engine does not smoke, it evenly runs, nothing happens ...

Thanks. I ordered a liquid to "repair" the gasket and I will start looking for a mechanic on the spot, or maybe I would risk and go to my own in Poland.
If I knew any home method to check this cooler it would be after the problem ...

Best regards!

Gentlemen - and the water pump?
will not give similar symptoms?

I drove I drove and fluid started to deplete more.
At the moment, it is clearly seen that the amount of oil in the drier has increased - this can be seen on the dipstick, and butter appeared under the oil filler cap.
Earlier the cork was very dry.
In the meantime, I found a place of fluid loss - the vent on the coolant tube, but apparently this was not the only place of loss.

Gentlemen - I repeat the questions - can the water pump in these engines, its damage, affect the water supply to the oil pan?
Is this a head gasket?
From one engineer I heard that it was rather a water pump, from the other - from such a possibility would not be possible through the water pump, the water from the cooling system got into the oil.

The pump in my engine is driven by the sprocket teeth and lubricated with oil - that's what I read on the net.
I would be very grateful for the info, because I do not know which of the mechanics to listen to.

danyxm wrote:

Gentlemen - I repeat the questions - can the water pump in these engines, its damage, affect the water supply to the oil pan?

Can't If the pump squats, the fluid is drained out through a small channel. I'll just add that you can disassemble the pump without disassembling the timing, but when removing some fluid will pour into the bowl, so it's better to drain the oil.

Thanks gentlemen!
The car is standing and waiting for repair - I changed the oil and filters, the fluid consumes a lot and the amount of oil increases. That is a gasket.
Another question - maybe the last one?
Buying a new engine - using and inserting, or renovating this "mine"?
The utility is a lottery, it is hard to hit generally, for refurbishment, one thing is a well-kept car and at least you know what's in it. I don't know if it makes sense to resuscitate this engine at around 700,000 mileage.
If renovation is where?
And so I will - if already - for repair engine sent on a pallet to Poland.

Thanks for the hints

The car year was waiting for me to go to it ... and today I removed the cooling system - and found sludge in the oil cooler - the one in which the oil filter is screwed.
Could this be the reason for the loss of fluid and oil?

Hello, the oil cooler is probably broken and oil fluid gets into it.

dominic16 wrote:

Hello, the oil cooler is probably broken and oil fluid gets into it.

Off-site, where is it possible to buy a set of gaskets connecting the filter body with the heat exchanger?
The service wants to sell me a lot ...

after a year of fun and exploration - finally a happy final.
Used oil pump was responsible for oil leakage.
Perhaps there is also an oil cooler in which the oil filter is screwed in - but here there are no clear indications. The pump was broken, let loose bearing.
So it's worth replacing from time to time.
In fact, access after removing the wheel is cool, you can quickly make a diagnosis.

The mechanics were saddened that there was no visible head gasket.

after a year of fun and exploration - finally a happy final.
Used oil pump was responsible for oil leakage.
Perhaps there is also an oil cooler in which the oil filter is screwed in - but here there are no clear indications. The pump was broken, let loose bearing.
So it's worth replacing from time to time.
In fact, access after removing the wheel is cool, you can quickly make a diagnosis.

The mechanics were saddened that there was no visible head gasket.

Added after 1 [minutes]:

I replaced a water pump that was worn out and an oil cooler that could also leak - problem solved