Bloody coolant tank cap...

**Disco Muppet** · 23rd July 2013, 02:38 PM

So, just come back to the D2 at uni and there's a large red puddle underneath.
I know the tank cap has been leaking, it appears I also failed to do it up properly.
Unfortunately it looks like it's been coming out while in motion, the underside is a lovely, drippy shade of pink.
Expansion tank is empty.
However, given the volume that's on the ground underneath it, it seems lost all the coolant with the motor running, which is something to be thankful for.
Fingers crossed a new cap and some coolant is all that's required, can't really afford to have done the HG

**rover-56** · 23rd July 2013, 02:50 PM

I found that you can't leave the coolant cap loose or off - it just sprays coolant everywhere.
I have a slight seep in the rad head tank so I thought I would just leave the cap off to run unpressurised while I look into radiators. no way- I loose more coolant with the cap off than with the rad pressurised.
No I don't have head gasket leaks.
You probably don't have a problem.

Terry

**Disco Muppet** · 23rd July 2013, 02:55 PM

Yup.
It's not the first time It's been low on coolant, there was SFA in the overflow tank when I got it, ran on straight water for a few weeks....

Girlfriend is on the way with more Coolant, nothing for me to do but sit in the car and listen to Pavarotti....

schuy1 · 24th July 2013, 05:30 PM

And your low water alarm did what..............................?

**robbotd5** · 24th July 2013, 06:38 PM

A new expansion tank with cap would be the go. It's what i'd do. Check all your hoses too mate.
Regards
Robbo

**Collins** · 24th July 2013, 06:54 PM

It might pay to check that the return line spigot is not cracked at its junction with the tank. I had a continuing minor loss of coolant until I eventually replaced the tank.
There was a crack in the return line spigot, I assume due to pressure being applied via the return line when the coolant tank is lifted out of position for maintenance purposes.

**OffTrack** · 25th July 2013, 05:48 AM

Originally Posted by schuy1

And your low water alarm did what..............................?

That is a very, very good question!

**bob10** · 25th July 2013, 07:17 AM

The radiator bleed pipe, item no 29 on the RAVE cooling system component layout drawing is well known for hardening & cracking. Runs from the top right of the radiator, to the top of the coolant tank, next to the overflow pipe, under the shroud for part of the way. Bob

**Disco Muppet** · 25th July 2013, 07:53 AM

Okay boys, one at a time

1. NO LOW WATER ALARM.
Consider this worse than me not tightening the cap up, it is being rectified.

2. All the coolant hoses are fine, including the top one which was replaced not 10k ago.

3. I've had coolant weeps from the fuel cooler O-Rings, but sporadically. Trying to locate a source for some Viton O-Rings locally, none of the engineering shops really want to do anything about getting me some in.

Yesterday I went and had a look, the resevoir was low but far from empty, probably because I filled the tank while it was warm. Topped it up before uni, tightened the cap very securely, and drove to uni, caning it all the way. Level was dead on when I got there, not a drop after I returned to it after lectures, level still on the money when I got home.
Topped it up a little more to be safe, and pressure washed the entire car, including the engine bay and the underside, not a pink stain in sight.
If it's still leaking, I'll know about it

**Yorkie** · 25th July 2013, 08:56 AM

i just replaced on of the oring at the front of my cooler, i have two spare.

or for about $40 you can buy the orings and new jubilee clips on ebay locally, think roverlord in melb has them, the jubilee clips would have been very handy instead of reusing land rovers PITA clip.

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