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Thread: Z20NET Signum

  1. #1
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    Default Z20NET Signum

    The Other week i got the warning light on the dash saying check radiator water, so i had a look and it was about 2 inch under the maximum line on the water tank. 2 days later the light came on again, so i checked it and it seems to be loosing the same amount of water each time Hope this isnt a head gasket fault. ive checked the top of the oil cap and there doesnt seem to be cloudy oil in there. Its ok for about 2/3 days but then needs topping up. also on start up it sounds a bit ruff, like a tinny noise.. Hope someone could help.

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    Full Member Big Sig's Avatar
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    Have you checked all the hoses and rad for leaks?

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    yeh, theres no obvious signs of leaking underneath the car when ive had a look. i cant really get to the rad to check properly as its behind the intercooler and what not. all the pipes from the tank to the rad are ok..

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    Full Member Big Sig's Avatar
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    When anti freeze dries it leaves a tell tale mark. Just look for that around the rad.

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    Full Member Caveman_nige's Avatar
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    have you got underneath the car to check for leaks when the engines is running?
    My old Signum, the animal; she now rests in pieces in several other members cars.. https://www.vectra-c.com/forum/garag...vehicle&id=200
    The wifes vec show car, started as a standard daily driver and ended up like this. https://www.vectra-c.com/forum/garag...vehicle&id=709



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    the water could also be going in to the cylinders turning it to steam via a knackered head gasket and burning the water into the atmosphere through the exhaust.
    the only way to check this is to do a pressure test on the engine.
    also if it is going into the cylinders when you turn it off water will sit until you next start it causing poor starting and the tin sounding noise as engine not firing properly.

    garry

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    Quote Originally Posted by Caveman_nige View Post
    have you got underneath the car to check for leaks when the engines is running?

    This Will Be My Next Step. Just Waiting For Some Decent Weather As Its Hammering It Down ... Thanks for this.

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    Quote Originally Posted by gazthebigyin View Post
    the water could also be going in to the cylinders turning it to steam via a knackered head gasket and burning the water into the atmosphere through the exhaust.
    the only way to check this is to do a pressure test on the engine.
    also if it is going into the cylinders when you turn it off water will sit until you next start it causing poor starting and the tin sounding noise as engine not firing properly.

    garry
    The Engine seems to be firing fine.. it does smoke abit on start up but soon as its warmed up it seems fine.. as for the tin noise this also disapears after about 7 mins once the cars warmed up.. cheers

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    Regular Member mark1319's Avatar
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    There is a large union below the coolant tank that has several pipes coming to one joint. Mine is leaking from here and it's obvious as the tell tale red markings are left on top of the gearbox by the dried out coolant. Might be worth a look.

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