Corsa C Z12XE 2004: Coolant Loss Mystery - EGR Valve Leak, CO2 Head Gasket Test, No External Leaks

Hello.

I have a problem with Opel Corsa C 1.2 engine Z12XE, 75HP, PB + LPG. 2004 year. (Mileage 252 thousand km - I suppose larger).
There has been a decrease in coolant in the car for several weeks, currently around 0.5-0.7L / 350km.
What I've checked so far:
* No leaks, on a cold and hot engine I checked all hoses, clamps, squeezed them etc. (The car stands on the ankle for several hours a day, no stain appears.
* No fluid in oil, no fluid in oil.
* Morning after firing, slightly white.
* Hoses do not "swell", slightly hard on a hot engine.
* No bubbles in the coolant tank.

I am currently waiting for a CO2 head gasket tester.

I wonder if fluid can escape in this car through the EGR valve?
No external leakage from the body.
I wonder because because of me this valve is strange, there is no upper electrical part, there is no plug, only the body itself, I am not sure if anyone was not up to anything. There are no errors in the controller.

I enclose a picture of the valve, please give me some advice.
Does anyone know if there were such "faulty" valves in Corsa from that year?

Hello. As for the EGR, there were 2 versions of the Cors C 1.2 Z12XE without an electronic valve and with a valve. But looking at your picture it is wet underneath this valve or it's an oil leak.

Thank you for your response.
It's oil residue because I had a leak from the oil filter base before.
Looking at the prices of EGR gaskets, I decided to replace it as a preventive measure.
And how does such an EGR work without an electronic valve? Does it fulfill a role? Is it open all the time?

Did you solve it somehow? Is the head gasket?

The original EGR seal is constructed so that any coolant leakage should be outside and not in the exhaust. But no one knows what's up there.

Thanks to OCIZ I will check. A little strange thing because the car is about 180,000 new 1 owner and the fluid is running out. Normal temperature, new cooler. I will do a liquid CO2 test.
There is no fluid in the oil, also the water pump probably replaced. There is still a place where it could be so (the cooler slows this engine has nothing else also does not associate) or I will check this egr yet.

Maybe I will ask you did you make this engine in terms of fluid loss through the gasket? Because I only through the chain / oil intake and perpetually connected with it.

I will see how the candles look.

Unfortunately for me it was not EGR leakage, but from under the head gasket, there the cooling channel is very close to the edge ...

And did you get to the cylinder? Did he smoke Which cylinder counting from 1 is the one from the board?

Thanks for the answer.

Not into the cylinder, it flowed under the EGR valve to the outside.
After removing the EGR valve, it turned out that it was not his fault but the liquid that flowed out on the corner of the head under it.
Later it flowed so much that I had to refill a lot, half the box was wet with refrigerant until it made a stain.

I have no stains, EGR does not pound fluid in the exhaust, unfortunately only the gasket or head rupture remains.

In general, my engine is already in poor condition (it takes oil), I added sealant to the radiators and I have been driving for over 22,000 kilometers.

Replacing the head gasket to do it right in this engine is expensive, because there are timing seals etc., and I could do a general overhaul of the engine with cylinder seals etc., but that the car has almost 280,000 on the meter made on LPG (I really count +100 because someone withdrew it or 380) it is better to replace the engine sometime.

The leak, of course, with the radiator sealant, sealed well so far, there has been no loss of fluid for over a year, but I expect that one day it will come back