75 Tourer coolant leaking..from where?

75 Tourer coolant leaking..from where?

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mdg64

Original Poster:

2 posts

31 months

Monday 26th February 2018
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Hello folks, My first post and its an ask, sorry bout that. My CDT Tourer has developed a significant coolant leak, its goes from nothing to nearly drained away in a couple of days. The problem overheating just appeared one time, I topped up a whopping 2 litres and thought oh well, maybe i'll have to change the coolant as there were signs of cottage cheese. In the process of prevaricating it overheated again and I've ended up getting ramps and trying to figure out whats leaking.


I'm having major trouble locating said leak, the coolant seems to be everywhere. Underneath its as if someones just tipped a pint in the open bonnet and its dripping all over the place. Ive had a look around but I'm absolutely none the wiser. Each forum I've looked at seems to have the Photobucket image hidden behind an upgrade your account notice. My photographs are only useful inasmuch as they prove a leak.

I've read positive things that I might be able to fix it myself and by the same token I've read that its an absolute nightmare. Can anyone shed some light for me please?
Cheers.
Mike

Oldandslow

2,282 posts

163 months

Tuesday 27th February 2018
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If hot and pressurised it'll spray a fair distance from the actual leak. Hardest to find I had was a pinhole in a hose that sprayed onto everything else but when you looked for it the hose was dry while everything else was sodden. Also a water pump pulley seal will spray everything off the spinning pulley.

Take all the covers off, fill it with coolant. Wipe everything down and then run it up to temperature and watch for new leaks (Perhaps wear a face shield for H&S). Try to narrow down the source.

mdg64

Original Poster:

2 posts

31 months

Tuesday 27th February 2018
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Yep, that sounds like a good plan, cheers!

SamR380

575 posts

77 months

Tuesday 27th February 2018
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The plastic sidetanks on the radiators commonly split with a hairline crack. Happens on the BMWs the radiators came from too.

350zwelgje

1,814 posts

218 months

Tuesday 27th February 2018
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Waterpump seal is notorious as well and difficult to get at... As the waterpump is in a near inaccessible position!
I lost a fair amount when it went: was parked up and coming back a lot of coolant on the floor. Lost about a liter and probably another to get home.

The top radiator hose connects via a plastic piece to the radiator.
It has a small seal that I have replaced on several 75 CDTs
You can see a bolt on the radiator. Easy to get at and to replace.

It is all 5p stuff again that gives up after many years just due to age.

Rob