Coolant leak - part identification time!

BiggDogg

A2OC Donor

O07JESTER

Member
It could be worth checking the hose connected on the right side of the flange.My hose developed a blister and perforated due to a diesel leak.if your pump has a leak it will attack those hoses and you won't necessarily notice until you get a leak.i think the hose is about £30.i would check for a diesel leak to prevent it from happening again
 

heppers

Member
Your engine looks like a 2004-> ATL, so see this link:
https://nemigaparts.com/cat_spares/etka/audi/a2/248/121390/
Your highlight is of part 15 (hose - 8Z0 121 058 C ) and 31 (clamp - N 906 871 01) but be aware that housing is plastic (17) and has two flimsy screws (19,20) and an o-ring (18). Equally any water found there could also be due to the return feed to the coolant reservoir (hose 14 and clamp 27) - ignore that the diagram isn't geometrically correct - it's the pipe coming out of the right side of the block just above the EGR return pipe you've highlighted, or as others have said the coolant temp sensor (5 and 21)

I've included a photo of the rear of my ATL showing the open ends you'll need to access. It's not an easy job due to the access for the other end of that hose - you'll likely need hazet hose clamp pliers to remove the hose with the engine in situ.
https://www.amazon.co.uk/Hazet-192-Hose-Clamp-Pliers/dp/B004H4ECYK/ref=sr_1_16

IMG_3270.jpeg
 

Attachments

Silverpig

Member
Your engine looks like a 2004-> ATL, so see this link:
https://nemigaparts.com/cat_spares/etka/audi/a2/248/121390/
Your highlight is of part 15 (hose - 8Z0 121 058 C ) and 31 (clamp - N 906 871 01) but be aware that housing is plastic (17) and has two flimsy screws (19,20) and an o-ring (18). Equally any water found there could also be due to the return feed to the coolant reservoir (hose 14 and clamp 27) - ignore that the diagram isn't geometrically correct - it's the pipe coming out of the right side of the block just above the EGR return pipe you've highlighted, or as others have said the coolant temp sensor (5 and 21)

I've included a photo of the rear of my ATL showing the open ends you'll need to access. It's not an easy job due to the access for the other end of that hose - you'll likely need hazet hose clamp pliers to remove the hose with the engine in situ.
https://www.amazon.co.uk/Hazet-192-Hose-Clamp-Pliers/dp/B004H4ECYK/ref=sr_1_16

View attachment 60505
Hi,

Thanks so much for the advice. The car is a 2001 AMF but I see the point you’re trying to make, it looks like a right pig of a job to remove the pipe work. I’m guessing it’s the diesel pump right above it, removing that might make things easier but that could be a Pandora’s box all of its own.
 

Silverpig

Member
Thanks one and all for your useful pointers, once it’s stopped raining I’ll have another look at it, but for now it’s parked up in disgrace.
 
Top