Thread: TD5 Top Radiator Hose Question

Originally Posted by Kent_P

Hi all,


Another TD5 Top radiator Hose question!


I recently replaced my top radiator hose with a genuine one after a chaffing issue and subsequently leak.


All good for a week and then it started.

This week, the hose has started to weep through the side fibres of part of the pipe that connects to the radiator next to the airbox. A few drops here and there.

Also, the bottom of the hose where the it connects to the metal pipe has begun to leak. It's not enough to stop driving the car but enough to require some attention.


The D2 has 307km, recently repaired fuel cooler and all good. No other coolant leaks.


If someone could provided me with some direction, it would be much appreciated.


Thank you very much!

Question - is it weeping where the hose is over the metal joins at the ends, or where there is only hose?

If the former, I'm assuming you cleaned up the metal surfaces prior to fitting the new hoses. A trick that sometimes helps (and sometimes not) is to put some Vaseline on the outside of the metal under the hose junctions (not too much, but ensure a good seal), and see if it still weeps.

Won't even ask if you put the clamps on properly.
Good luck - only 200K to go before a rebuild!!

Originally Posted by gavinwibrow

....

Won't even ask if you put the clamps on properly.
....

... and are the clamps the genuine compression fit types, or aftermarket worm drive types?

Sometimes just moving the clamp a mm or so forward/rearward on the hose can help.
I had this problem on my Tdi after a flush, drove me mad for a bit with the continual drip leak .. which got me off my posterior and I finally replaced all the hoses with a silicon set I purchased a couple of years ago!

Originally Posted by gavinwibrow

Question - is it weeping where the hose is over the metal joins at the ends, or where there is only hose?

If the former, I'm assuming you cleaned up the metal surfaces prior to fitting the new hoses. A trick that sometimes helps (and sometimes not) is to put some Vaseline on the outside of the metal under the hose junctions (not too much, but ensure a good seal), and see if it still weeps.

Won't even ask if you put the clamps on properly.
Good luck - only 200K to go before a rebuild!!

i had similar issues with weeping when I changed out all my hoses. I changed out the spring clips that came with the hoses for old style hose clamps and it solved it.

A common persistent problem with rubbish quality.
It doesn’t matter who or where you buy the hose from.

Fix the problem permanently with a Samco silicone hose.

Wish I had done this from the beginning.

The odd genuine hose can have issues with a leak between the laminating of the fire and the rubber but this rare. It's the aftermarket hoses that cause problems generally . The genuine factory clamps don't usually cause issues if fitted to a clean connection point. Also genuine hoses have paint marks that coincide with notches on castings on the fitting area to ensure correct alignment to correct rubbing clearance. If you bought it locally return it for a warranty claim, if you bought it O/S then it'll probably cost more to post it back for examination than what it's worth.

I blew a genuine hose last week after complaining to my parts supplier he said he is getting to the point that he is steering people away from genuine items.
Apparently there has been a change of manufacturing location and there are many issues with the vulcanising
He supplied non genuine and it did look a little better made.

Originally Posted by djam1

I blew a genuine hose last week after complaining to my parts supplier he said he is getting to the point that he is steering people away from genuine items.
Apparently there has been a change of manufacturing location and there are many issues with the vulcanising
He supplied non genuine and it did look a little better made.

We are doing the opposite steering people away from aftermarket hoses as they have been a head ache.
As far as vulcanising, yes lots of problems with aftermarket hoses we find .
They come from Pakistan, India and similar countries
Then there are those aftermarket ones which don't have vulcanising like the one in pic attached. inconsistent wall thickness through out.

20170510_124154_resized.jpg
20170510_124210_resized.jpg

Originally Posted by Roverlord off road spares

....
Then there are those aftermarket ones which don't have vulcanising like the one in pic attached. inconsistent wall thickness through out.

.....

I think there's a saying .. "there's nothing really new under the sun"(or word to that effect).
I remember as a teenager, my dad used to have Cadillacs, and the one he had when I was roughly 15-ish left us stranded when it 'blew a hose' in a similar manner to that top pic.

Then again when I was in my early 20's. I only just got my RRC late '88, and as part of my routine with a new car, I pull the rad, flush engine, flush rad, clean out gunk from around the rad(the crap that always get trapped in there) .. etc.
As I was doing all that one weekend, dad asks me to help fix his Caddy(which really means... can I do it for him .. not help him, or him help me! )
He only just got it serviced and on the way home blew the hose, exactly the same way.
Hose was relatively new, had the Gates sticker in pretty clean condition on the underside, and made in the good ol USA.