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Samantha Hornby
Goo Roo
WA
TT Auto

Posts: 1147
Reg: 09-2005

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Saturday, June 13, 2009 - 12:42 am, by:  Samantha Hornby (Marla_singer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

When I turn my engine on (particularly on a freezing cold morning) I can hear water gushing through the pipes behind my dashboard. I can only assume this means there's air getting in from leak somewhere? If there's no air in the pipes I shouldn't be able to hear water flowing right? When I take off my radiator cap there's no air bubbles rising up and the level is always normal.
Any thoughts?
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 10618
Reg: 11-2004

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Saturday, June 13, 2009 - 01:19 am, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Probably air in the heater matrix. Might be worth checking where the heater hoses join the VSV, keep in mind that the engine needs to be running for the VSV to be open - vacuum actuated.
Samantha Hornby
Goo Roo
WA
TT Auto

Posts: 1148
Reg: 09-2005

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Saturday, June 13, 2009 - 02:29 pm, by:  Samantha Hornby (Marla_singer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hmmm thanks Peter. The water/coolant in my radiator has a rusty coloured film on it too...definitely some kind of oxidization. I'll get it looked at...
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 10620
Reg: 11-2004

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Saturday, June 13, 2009 - 02:48 pm, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yuk! Full flush time for sure! :-)
Brett Cutts
Tinkerer
south australia
v8

Posts: 59
Reg: 07-2008

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Sunday, June 14, 2009 - 01:13 am, by:  Brett Cutts (Boof390) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

i used to have this problem with my v8 soarer under heavy acceleration with the heater partly on and i fixed it the holden way. the vr vs commodores have the problem that bad that gm put a restrictor in one of the hoses to slow down water flow (without it there it sounds like someone flushing a toilet every time you accelerate, now you know why the nick name commode). i went to a wrecker and got a restrictor (looks like a brass 5/8 water pipe joiner with a 8mm hole through the guts) cut a heater hose and added it inline. end of cute noises and the heater still works fine afterward.

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