Pressure in the radiator hoses

Thank you very much Alex for your reply. As I can tell the pressure is high after the thermostat opened because the obd2 scanner shows the temperature is about 84c and the thermostat is should be opened at 82c written on the thermostat and the lower and the upper radiator hoses almost the same temperature by feeling so this means the thermostat is open. The pressure is when the car is at running temperature the hoses gets hard and you could feel there is a a high pressure in the hoses. Regarding the head gasket I am not sure but I will give it a try for the tester kit, I am not sure because when I open the cap and let the car idle no bubbles come out only the coolant level starts to rise and spill over a little bit when the car is idling. Regarding the engine oil there is no mix I did check it, the oil is the same color, and also there is no smoke from the exhaust neither a smell. As I understand and correct me if I am wrong if the head gasket is blowing or have small pin hole this will only result in gases going into the radiator this is the only thing, and the cracked cylinder head or engine block will cause the coolant to go into the engine right? This means the head gasket will not leak coolant into the engine only when the cylinder head or the engine block will leak coolant into the engine right? If this right so I guess I am not sure maybe what is causing the high pressure is the head gasket. I will give the tester a run and see what I will come with. According to the information that I did mention now what do you think? Or is it normal to have the lower and upper radiator hoses hard

Thank you very much : )

Thank you very much Alex for keeping up with me. Regarding the thermostat I did read your message and went to test the thermostat.
What I did is this the car is overnight cold I did top up a little bit of the coolant in the tank less than 30ml. I started the car and let it warm up without moving the hoses get hard as usual. I will attach a picture of the hoses the ones with a rectangle are hard and hot after some time the one down with the arrow it's down where the thermostat is connected is hard, but not hot. I lit the car warm up to temperature up to 83c on the obd2 scanner and still the the houses with the rectangle hard and hot and the one down hard but not hot. I did move with the car for a test drive for 3 minutes and parked check the hoses the ones with the rectangle are still hard and hot the one down are hard and hot now. So I don't know but this means the thermostat did open right? And the coolant is flowing right? But still the houses are hard. Let's say that the thermostat is bad or something wouldn't I have a overheating issues? I don't at all after I changed the thermostat and did the flush and changed the coolant and changed the cap I don't have issues with overheating.

Thank you : )

No, let's start what happened from the beginning.
First before a month ago I was traveling for almost a day when I arrived at my destination I was buying some food and the car is running and the AC was running, I noticed the car overheated before the H by one line, I moved and shutdown the AC as soon I moved I noticed the heat is going down until it went to normal. I thought because of the weather is hot and I was on the road for almost a day it did overheat. Then 3 days all good when I traveled back I noticed that when I am doing 90ml/h the car heats and when going 60 the temperature is normal so I did continue to go on 60 until I reached my destination. After that I started to search the problem and I found that it might be the coolant or the thermostat or the cap so I changed the coolant with a flush and changed the thermostat with OEM one and changed the cap with OEM one, after that the temperature is good no overheating nothing and all good. After that I started to notice that my hoses are hard both the upper and lower one. So I thought air is trapped in the system I bled the air more than 3 times and nothing the same the hoses are hard. I started to search the problem and found in the internet it might be the cap is faulty. So I bought another OEM cap and nothing, the same thing. I searched and searched and I found your website and I did the 6 ways for head gasket problems (without the cylinder leak test) and nothing all good. But still have the problem of hard hoses across all the system the upper and lower one and you can feel it hard like there is high pressure in the system. That's the hole story.

Thank you : )

Hi

Sorry for the late reply, I was waiting for the tester to arrive. Regarding the points you mentioned, the car it's not overheating at all in city driving, traveling for long distance I don't know if it's going to overheat or not because I didn't travel but in city driving and highway no overheating at all. Regarding the cap I did check and it's the right specs as the old one exactly rated 1.1. Now for the test I didn't buy the one that you guys told me to do because it didn't have an international shipping on it. So I bought another one from eBay and this is the link for it:

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F323505216857

It did arrive and I did the test, the results are, I did the test following the instructions for the first 10 mins the color was dark blue ( same color from of the test fluid ) even with revving the engine couple times, after 10 mins and exactly when I hit the 14 mins mark the fluid color changed to light blue, I don't know what this means, I did test the fluid with the exhaust and the color changed to yellow in less than a minute, so is this means I have a really really small leak or because the fluid was exposed to the air around the engine for long period it changed to light blue I am sure what you guys think about this? And what is the meaning of light blue color?
I will include some pictures and videos in the next reply.

Thank you : )

The first video is at the beginning.
The second one at the 9 minutes.
The third one at the 14/15 minutes when the color changed.
And a clear pictures of the color change to bring blue.