Thread: identify pink build up

coolant.

Originally Posted by discobaz4311

Can anyone quickly identify this pink residue/build up please?

cheers

Baz

OAT Coolant.

Probably from the stub to hose connection on the water outlet of the engine just above the EGR pipe.
This stub had grown a crusty coating from a slow leak on mine, so maybe a new hose needed with new clip and a thorough clean of the stub with sandpaper or similar to give a smooth surface. You usually get new clips with the hose.
Regards Philip A

Certainly seems to be leaking from the hose above in that photo.
Check on the end of the hose - if you can see the same sort of growth on the ends of the reinforcing fibres in the hose I'd be guessing the hose has become porous internally and needs replacing anyway.
If the fibres look normal and the leaking seems to be just between the hose and the fitting that it attaches to, then as Phillip said a simple clean up/hose, and new clamp may sort it out.
Personally, I use Permatex #3 "Aviation Form-a-gasket" on all my coolant to alloy housing joints. Makes the hoses a bit of a bugger to get off, but seems to stop the usual corrosion that occurs, and its very rare that I've had one leak.

Steve

The hose itself seems a bit crusty and most likely has lost it's integrity so I'll be off ti find a new one shortly! Thanks everyone!

As a tip, an old bicycle chain (or even just borrow one off a bike temporarily, as it comes to no harm) wrapped around the stub and run back and forth makes it very easy to clean the corrosion off those hard to reach bits.