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Posted: Mon Jan 24, 2011 3:00 pm |
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Joined: Feb 21, 2010 Posts: 228
Trade Rating: +4
Location: West Lothian
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hey dunno if i'm just worrying but got my car home today and was checking something in the engine and there was a white dried up dusty residue all over the engine cover and some down the back of the block but checked my coolant level and before it was brimming but now i cant see any, has the tank split or has the head gasket likely blown? the car wasn't overheating, i still had hot air in the heater and the oil looked okay only other thing was i kept the car running and took the oil cap off and was getting hot air blowing out of the hole where the oil goes, is this normal? 2.0 hdi dturbo btw
any help appreciated:)
Thanks
Chris
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Posted: Mon Jan 24, 2011 3:06 pm |
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Joined: Feb 07, 2010 Posts: 1056
Trade Rating: +9
Location: Bury St Edmunds
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Full to the cap or maximum level line?
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| 4th 206 but finally a 180 | |
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Posted: Mon Jan 24, 2011 3:08 pm |
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Joined: Feb 21, 2010 Posts: 228
Trade Rating: +4
Location: West Lothian
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it was filled to the cap by the garage about a month and a half ago but stayed like that until i just checked it
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Posted: Mon Jan 24, 2011 3:15 pm |
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Joined: Feb 07, 2010 Posts: 1056
Trade Rating: +9
Location: Bury St Edmunds
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Should only go to the max line. It's an expansion bottle really and when the coolant gets hot/flushed through the system it expands and if there is no room in the bottle the build up of pressure has no where to go. May have blown a seal or something. Best bet is to make sure the the engine bay is dry, and top up coolant, check for leaks anywhere.
Worst case head could have warped or cracked
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| 4th 206 but finally a 180 | |
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Posted: Mon Jan 24, 2011 3:19 pm |
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Joined: Feb 08, 2010 Posts: 10151
Trade Rating: +12
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did your coolant cap tight?
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Posted: Mon Jan 24, 2011 3:21 pm |
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Joined: Dec 04, 2010 Posts: 86
Trade Rating: 0
Location: Norfolk
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My top hose coming out of the bottle wasnt sealing properly on mine when i first got my 206. replaced the jubilee clip & cut a couple of inches off the pipe = job done
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Posted: Mon Jan 24, 2011 3:43 pm |
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Joined: Nov 27, 2010 Posts: 11519
Trade Rating: +10
Location: What's it to you? ? ?
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Check the engine cover isn't loose or has rubbed through any of the small coolant hoses
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Posted: Mon Jan 24, 2011 3:58 pm |
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Joined: Apr 06, 2010 Posts: 38
Trade Rating: 0
Location: Preston / Birmingham
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Doesn't a coolant cap have a pressure release valve ? - so that if there is too much of a pressure build up it can release as an overflow and would cause this? I'm sure I came across that somewhere, correct me if I'm wrong
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| Moonstone GTI . . . SP grilles, ss cat-back, quick shift, ECU re-map. Trying to resist the modding bug this time and failing!
Z4 3.0si, 06 | |
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Posted: Mon Jan 24, 2011 4:31 pm |
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Joined: Nov 27, 2010 Posts: 11519
Trade Rating: +10
Location: What's it to you? ? ?
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-Tom- wrote: |
Doesn't a coolant cap have a pressure release valve ? |
Yes, they do
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Posted: Mon Jan 24, 2011 4:47 pm |
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Joined: Jan 13, 2011 Posts: 664
Trade Rating: 0
Location: aldershot
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doesnt it have a pipe near the top of tank so exsess can run off, 306 does, ive not paid to much attention under bonnet yet
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Posted: Mon Jan 24, 2011 4:52 pm |
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Joined: Apr 06, 2010 Posts: 38
Trade Rating: 0
Location: Preston / Birmingham
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I haven't noticed one no - but I had crystalised coolant which had escaped through the expansion cap when my car must have been running nice and hot (not over heating!!). This too was after the garage over filled mine. I wouldn't worry.
And you will get some air movement out of the oil cap if you open it when running due to the head internals moving.
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| Moonstone GTI . . . SP grilles, ss cat-back, quick shift, ECU re-map. Trying to resist the modding bug this time and failing!
Z4 3.0si, 06 | |
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Posted: Mon Jan 24, 2011 4:59 pm |
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Joined: Jan 13, 2011 Posts: 664
Trade Rating: 0
Location: aldershot
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try a new cap, the one ya got now might be faulty
surly it wouldnt squirt all over the place if it was working normally, it would seep out
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Posted: Mon Jan 24, 2011 5:03 pm |
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Joined: Apr 06, 2010 Posts: 38
Trade Rating: 0
Location: Preston / Birmingham
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stevedude wrote: |
try a new cap, the one ya got now might be faulty
surly it wouldnt squirt all over the place if it was working normally, it would seep out |
He might do - but if the 2.0 HDI is anything like the 2.0 petrol the expansion tank angles in the direction of the rocker cover so could easily seep over it without being a squirter. Who knows
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| Moonstone GTI . . . SP grilles, ss cat-back, quick shift, ECU re-map. Trying to resist the modding bug this time and failing!
Z4 3.0si, 06 | |
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Posted: Mon Jan 24, 2011 5:08 pm |
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Joined: Jan 13, 2011 Posts: 664
Trade Rating: 0
Location: aldershot
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good point lol
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Posted: Mon Jan 24, 2011 6:01 pm |
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Joined: Feb 07, 2010 Posts: 1495
Trade Rating: +3
Location: Waiting for the tugboats to push me into port (Whitehaven)
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it's your head gasket pal
had this on another derv 206
whats happening is the pressure from in the cylinders is leaking out into the water jacket o nthe car and pressurising the bottle causing it to leak.
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