Leaking hose advice

[Leemc]

Hi all,

I was welcomed with a blue coolant sea in engine bilge this morning. The leak is a split in hose from side of calorifier to left side of engine.

Can I just undo clips and simply replace or do I have to do anything else? Don't want to cause any other issues.

cheers ( as always)

Lee

[matty40s]

If the hose has a hole in it near where your finger is pointing in 2nd picture, replace and then add a protective rubber outer to it like the thicker hose adjacent has.

It may well be the hose rubbing against that nut which has caused the problem.

[Leemc]

Sorry, that finger is just me identying the leaking one. Leak is halfway between two clips

[Tony Brooks]

If the hose in the top picture is the one leaking blue liquid, then you are poisoning yourselves. That one is on the PRV that only deals with domestic water. I suspect the hose you identify on the engine is the horizontal one near your finger - the calorifier coil connection.

[Tracy D'arth]

Replace hose, top up with  antifreeze and water @ 25% to 30%, bleed off any air at the high spots. Job done.

Edited September 7, 2021 by Tracy D'arth

[Leemc]

2 minutes ago, Tony Brooks said:

If the hose in the top picture is the one leaking blue liquid, then you are poisoning yourselves. That one is on the PRV that only deals with domestic water. I suspect the hose you identify on the engine is the horizontal one near your finger - the calorifier coil connection.

Sure you're right. Definitely don't have blue water from taps.

3 minutes ago, Tracy D'arth said:

Replace hose, top op antifreeze and water @ 25% to 30%, bleed off any air at the high spots. Job done.

Cheers. Will have a go but not sure how to bleed off any air at high spots though😰

[Scholar Gypsy]

Tangential point. I had a very slow leak on one of my engine hoses recently. It was fine when cold, I pumped the pressure tested up to 15 psi and it stayed there for hours.

But when it heated up the hose leaked a little bit (15ml a day sort of amount, really annoying). I've now replaced it (and added some lagging to stop it rubbing against the exhaust manifold!). 

[Tracy D'arth]

If you have a tight rub spot in a hose, an extra hose clip placed in the right place  will help prevent damage.

[matty40s]

1 hour ago, Leemc said:

Sorry, that finger is just me identying the leaking one. Leak is halfway between two clips

Same applies, hose is suffering from vibration against engine. Either wrap a protector around it at that location, or(if not enough space), extend the larger hose protector to surround both hoses.

[Leemc]

Thanks Matt