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Author Topic: leak at rear of engine  (Read 3870 times)

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brian36

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leak at rear of engine
« on: 03 April 2014, 15:25:46 »
hi folks just got home and there is a guess water traill to parking space and a foot wide puddle underneath car right in middle at rear of engine any ideas :'(
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05omegav6

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Re: leak at rear of engine
« Reply #1 on: 03 April 2014, 15:28:31 »
If clear water and no taste of coolant then perfectly normal side effect of air con working as it should :y

If it tastes of coolant then usual suspect is hbv or associated plumbing :y
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brian36

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Re: leak at rear of engine
« Reply #2 on: 03 April 2014, 15:35:00 »
to tell you the truth dont know if aircon was on just done school run never paid attention whether it was on or not if i go start now and put aircon on is there away of finding out if culprit?
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05omegav6

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Re: leak at rear of engine
« Reply #3 on: 03 April 2014, 15:37:49 »
Taste the puddle, the cause will be obvious :y
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brian36

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Re: leak at rear of engine
« Reply #4 on: 03 April 2014, 15:44:29 »
tastes disgusting take it anti freeze
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brian36

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Re: leak at rear of engine
« Reply #5 on: 03 April 2014, 16:30:07 »
any chance any member mechanics around milton keynes? as marks dtm will vouch i aint mechanically minded and he just a bit far away for this
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Delroy47

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Re: leak at rear of engine
« Reply #6 on: 03 April 2014, 17:07:54 »
Sounds like the good old heater bypass valve, just done mine. Cheated and got one of our contractors mechanics to change whilst I went home and put my feet up :y
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JamesV6CDX

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Re: leak at rear of engine
« Reply #7 on: 03 April 2014, 18:58:39 »
Quote from: brian36 on 03 April 2014, 16:30:07
any chance any member mechanics around milton keynes? as marks dtm will vouch i aint mechanically minded and he just a bit far away for this

I'm probably one of the closest in beaconsfield
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brian36

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Re: leak at rear of engine
« Reply #8 on: 03 April 2014, 19:46:41 »
hi thanks for reply just moving to here not sure around area so bear with me will have to google maps, i take it i may need a hbv for my f/l 2.6 mv6 anyone know where please
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vauxsull

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Re: leak at rear of engine
« Reply #9 on: 03 April 2014, 20:17:08 »
Interested to know what the results of this diagnosis is as i have an identical issue.
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Marks DTM Calib

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Re: leak at rear of engine
« Reply #10 on: 04 April 2014, 11:52:41 »
Brian

I assume this has just started happening in the last few days?

Does the leak vary dependent on climate setting?
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TheBoy

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Re: leak at rear of engine
« Reply #11 on: 04 April 2014, 12:27:44 »
As Marks DTM suggests, if its leaking when climate set to HI (for eg), try it with climate set to LO, or vice versa.  This usually points to HBV, about £30+VAT from dealer, trade, although avoid the scumbags at Crownhill (V4, between H5 and H4).  I'm told a new dealer has recently opened at Kingston, near the BP, on the way to the M1 Jnc 13. No idea if its Crownhill moving, or a separate dealership.

I'm in Brackley, on the Bucks/Northants/Oxon border if you need a 2nd opinion, or help.
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martin42

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Re: leak at rear of engine
« Reply #12 on: 04 April 2014, 15:58:44 »
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brian36

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Re: leak at rear of engine
« Reply #13 on: 04 April 2014, 19:10:57 »
hi mark etc so today filled up reservoir it was about 2 inches from max so filled up to just below line drove to work  with aircon on and set at 19 i tried heat on and then on low temp went up a bit when heat on to around 90 then back down to 85 when i got to work it has lost about a inch in reservoir.
drove home tonight and still sitting roughly same and no puddle or trail when reversing into space also checked foot well that dry. think i need someone to have a look so if you theboy are free over weekend can you have a wee look? would help me out need car for my new job just started thanks :)
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brian36

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Re: leak at rear of engine
« Reply #14 on: 04 April 2014, 19:11:33 »
Quote from: Marks DTM Calib on 04 April 2014, 11:52:41
Brian

I assume this has just started happening in the last few days?

Does the leak vary dependent on climate setting?

yes just yesterday
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