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Thread: Expansion tank trouble

  1. #1
    Regular Member Jow20's Avatar
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    Default Expansion tank trouble

    When my 1.8 vvt gets to running temparature the expansion bottle fills rite to the top and water spill out of the two holes at the top! Fans slowly kick in and water goes down for 30 seconds and then rises again! There isnt too much water in as when its cold the water sits below the max fill line in the centre. Anybody have any ideas? Cheers

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    Regular Member Chris SRi's Avatar
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    Sounds like a possible head gasket failure... How many miles has it done?

  3. #3
    Regular Member Jow20's Avatar
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    92k ive had head gasket test done and no gases are escaping

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    Thermostat stuck closed? It's only a guess, I'm a useless mechanic!

  5. #5
    Regular Member wardy23's Avatar
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    Vehicle : vectra

    Trim : sri

    Engine : 2.2

    Year : 2005

    Mileage : 64000

    Default

    fans not kicking in to cool car down as said thermostat air lock in cooling system

    replied to your pm tonight as i havent been able to get on the forum lol

  6. #6
    Regular Member Das's Avatar
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    Vehicle : Lada

    Trim : Riva

    Engine : 6.0 V12

    Year : 1954

    Mileage : 567890987

    Default

    Failed water pump. Can you see water returning to the header from the small pipe, this will happen from cold as its the bypass untill the thermostat opens.

  7. #7
    Regular Member Jow20's Avatar
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    It just fills to the very top and goes everywhere if the lids off or if lids on just bubbles where the little pipe at the top is and comes out of back tube! Ive tried parking on a hill and revving with cap off to get rid of any air locks, but little help. Even at hot running temp my pipes are hot but not hard if this helps??

  8. #8
    North West Regional Organiser paulvectrac's Avatar
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    Vehicle : vectra

    Trim : vxr

    Engine : 2.8 v6 turbo

    Year : 2007

    Default

    weired one eother stat or water pump mate wich needs checking
    Vectra vxr custome remaps egr deletes dpf and diagnostic work all remaps are custome bench tuning avalible all genuine equipment PM for info

  9. #9
    Regular Member Jow20's Avatar
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    Cam belt just been done on it, so maybe a water pump failure, what are the symptoms of this and worse scenario as im doing a 300 mile round trip next week!?

  10. #10
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    Well... the worst case scenario is that it overheats and the engine seizes! Hopefully it won't come to that

    Does the temperature gauge look OK or is it pretty high?

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