Coolant leak - Culprit is the Coolant inlet valve seal

[Crasher]

Well as I said, that has no feedback and my rule with this engine is "water loss, change the valve"; you could over analyse the problem for weeks only to come to the same conclusion.

[webego]

So appears I have the same issue (Q7 4M 2016 3.0 TDI). Had it at dealers recently to change glow plugs and asked if they would take a look down in the V for coolant and they said they could see it. I'm in SE London/NW Kent. Can anyone recommend a specialist indie for this job? Don't mind travelling outward a bit for a good recommendation.

[Crasher]

Cheap part, just that it takes hours to fit.

[ragebe]

So appears I have the same issue (Q7 4M 2016 3.0 TDI). Had it at dealers recently to change glow plugs and asked if they would take a look down in the V for coolant and they said they could see it. I'm in SE London/NW Kent. Can anyone recommend a specialist indie for this job? Don't mind travelling outward a bit for a good recommendation.

Unrelated to the coolant valve (mine has been fine since being changed) what was the £labour time for the glow plugs? My engine light has come on, for 2 x glow plugs.

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[Crasher]

It isn’t so much the time taken to change the plugs but the shear sphincter clenching gas inducing creak, rattle, squeal and squeak of each turn of the plug during removal that strikes fear into the mechanics underwear. Once we had all six snap the end off the plug and just sit there giving us the finger.

[ragebe]

So I understand Crasher. Soaking them in Plusgas or DERV is supposed to help (I'm reliably informed)

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[webego]

I only had a fault on one plug but decided to get all six changed as I was going to pay the dealers to do it. No issues, took less than 2 hours (while I waited) for just shy of £400 all in. Thought about doing it myself but bottled it for the above mentioned reasons.

[webego]

So nobody had this valve replaced by an indie in the South East? Also curious of costs incurred anywhere in the UK to be honest to get a ball park idea of non dealer prices.

[tallrobbo]

Hi Crasher

I have just bougt a Q7 and the coolant bottle is going down. After a lengthy journey I can smell coolant on opening the bonnet. I have pressurised the system and boroscoped everything. Its all dry, no witness on the shut off valve. V comp;letely dry, no drips coming down from V. The undertray is wet with coolant. No drips. The top of the sump is wet right under that valve you posted. I thinkit must be either the valve or the housing.
leaka.bmp
Did you get to the bottom of your leak? If this valve is oil pump pressure valve then I guess it cant be that.

thanks in advance

[Crasher]

We have had some where the water pump gasket corrodes and allows a small leak you cannot see.