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The head gasket again? When you unscrew the radiator cap, the pressure blows out

silver_x 39798 9
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 1323072
    silver_x
    Level 16  
    Hello
    3 months ago I bought a Nissan Synny. when I bought it there was sludge in the radiator. The previous owner said that he had replaced the gasket and the Head splattered, I thought it was residue from the fluid mixed with oil. Actually it was fine for 3 months
    Now I have a strange symptom, after opening the radiator cap a lot of pressure blows out the fluid. Is this typical for the gasket? Has it died again?
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    #2 1323084
    Adam700
    Level 22  
    Do as follows: start the car and let it run for a while, then unscrew the plug on the radiator and preferably on the balancing tank and give gas.If you can see the effect of bubbling or blowing up of the fluid, it's definitely the gasket.You can also check the oil.If you can see "two states" on the dipstick, i.e. water and oil, it also points to the gasket.Maybe he replaced it with a counterfeit and that's why such an effect.Or the head could be poorly tightened.Either way, check what I've written and if it's like that, unfortunately the gasket replacement awaits you.Greetings!
  • #3 1323091
    silver_x
    Level 16  
    That is exactly the problem that in the reservoir does not even vibrate. And in the radiator it blows up. I thought that maybe the system is aerated but it will probably be the gasket
    Thanks for the advice
    Today I will test on open radiator cap

    PS. What are the effects of an overheated engine?
    will it take oil, run louder? Smoke blue?
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    #4 1323231
    manta
    VIP Meritorious for electroda.pl  
    In the combustion chamber there is a gauge pressure of about 1.2 MPa and the cooling system operates at 0.12 MPa , if there is damage to the gasket as a rule ruptures some component , what you described indicates a lack of circulation between the system and the expansion tank that is something unobstructed .And write what kind of engine it is.
  • #5 1323568
    Adam700
    Level 22  
    manta wrote:
    In the combustion chamber there is a gauge pressure of about 1.2 MPa and the cooling system is operating at 0.12 MPa , if there is damage to the gasket usually bursts some element , what you described indicates a lack of circulation between the system and the expansion tank ie, something unobstructed .And write what kind of engine it is.
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    #6 1323642
    evolutionVIII
    Level 13  
    This is a typical symptom of a head gasket, probably something was done cheaply. I don't want to worry you, but it could be not only the gasket (crack in the head or on the cylinder sleeve) but this is unlikely to happen in Japanese. He probably gave a gasket from Japan Cars for 30 zlotys andu such an effect
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    #7 1323842
    Mariogr
    Level 17  
    This may also be a symptom of a faulty pressure valve in the cap, if the pressure in the radiator exceeds the critical value, the excess fluid is drained into the expansion tank. The outflow of fluid when the engine is hot is normal, the cooling system is pressurized, worse if after opening the cap nothing happens - then the system is leaking. If the gasket is faulty, or the head is cracked - then when you turn off the engine, the fluid should expand just through the leaking gasket or damaged head. For starters, maybe replace the radiator cap - it will be cheaper.
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  • #8 1325651
    silver_x
    Level 16  
    Engine 2.0 Dieselek
    But the matter has already solved. It turned out that there was a slight leak with a gasket on the water pump. The system was probably aerated and created a vacuum. I bought a gasket with the pump, replaced it and there is peace and quiet from the cork and quiet in the car is also nice :-)
    I only worry that a few times the temperature jumped into the red field and I could overheat it a little. And flip flops don't seem to like that

    Thank you all for the birth
    I wish you trouble-free 4 wheels, rubber trees and better roads
  • #9 5753612
    masterone1
    Level 1  
    I have a similar problem.I pour liquid into the tank and after a few kilometers it escapes and shows me the check engine temperature light that it is too high.Could it be the head gasket?
    I have 1.8 V8 + LPG


    Added after 10 [minutes]:

    and one more thing.I am peeing a lot from the exhaust.
  • #10 5753696
    Anonymous
    Anonymous  
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Topic summary

The discussion revolves around a Nissan Sunny experiencing symptoms indicative of a potential head gasket failure. The user reports excessive pressure release when opening the radiator cap, which raises concerns about the integrity of the head gasket. Responses suggest various diagnostic steps, including checking for bubbling in the radiator, inspecting the oil for contamination, and considering the possibility of a faulty pressure valve in the radiator cap. Ultimately, the user discovers a minor leak in the water pump gasket, which was causing the issues, and resolves the problem by replacing the gasket. Concerns about engine overheating due to previous temperature spikes are also mentioned.
Summary generated by the language model.
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