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owe
01-12-2011, 19:28
hi people, just found this leak, just wondering if anyone has come across it before? im thinkin possible h/g or even cracked block :(

the hole in the block just keeps filling with coolant

some help wud be much appreciated :?

http://i359.photobucket.com/albums/oo35/owe1984/IMAG0889.jpg

http://i359.photobucket.com/albums/oo35/owe1984/IMAG0891.jpg

16v_paddy
01-12-2011, 20:41
That's a tough 1 to call :? I'd try & rule out the coolant hoses in that area 1st.

If it is a cracked block it'll be a bloody massive crack or impressively fooked head gasket, look at the pic & you'll see how far the waterway is from the bit of the block the water is collecting in so if it is coming from there it's got a long way to travel

http://i444.photobucket.com/albums/qq165/16v_paddy/Rebuild%20project/IMG_2222.jpg

owe
01-12-2011, 21:14
ahh that pic helps alot, nice one bud. i'll do some more investigating of the pipe work tomoz. it looks like its filling from the bottom but im hoping now that its just running along the head an filling up. i just always expect the worse since ive been a renault 5 owner lol

16v_paddy
01-12-2011, 21:28
A Renault veteran then :lol:

cliokiz
02-12-2011, 13:12
I've had this exact problem before.

Sorry to say but it is your head gasket.

The gasket will be split from a water jacket to the that hole and allowing water to escape.

New gasket time!

MatBrown
02-12-2011, 22:22
As above.
Cause is lack of coolant changes causing a build up of corrosion in the back corner which in turn overheats.

owe
03-12-2011, 21:10
ye ive had bit more of a look today after removing all the pipe work an i can see its weeping out between the head :( ahh well at least i'll get to kno my clio as well as i kno the 5 lol. thanks for the replies anyways

cliokiz
07-12-2011, 14:53
Whats your location?

I've just done the head gasket on the F7P in my Renault 19 last weekend. Not a fun job!

owe
14-12-2011, 08:21
haha ye i can agree with that one cliokiz, its taken me a good few late nights lol. im on anglesey n.wales

172lover
13-08-2012, 19:49
Found my coolant is filling up that hole also :shock:

Would there be any chance the coolant could be leaking from the thermostat housing and running along the head?

Just that.....
i put a new timing belt and it won't be fun to rip the engine out again and get someone to do the HG :(

16v_paddy
13-08-2012, 21:03
Only 1 way to rule it out, remove & refit the stat housing with some sealant but tbh, if it is that leaking the water would be collecting in all the little pockets on the gearbox

172lover
16-08-2012, 00:25
Mmmmmmm Thats true about the pockets filling up on the gearbox...
(It's not btw)

I did a compression test today
195-190-190-195.
(draper kit. Removed all spark plugs first and cranked it 10 secs on each cylinder)

Going by the numbers my old man said it isn't the gasket...
But it could be that it's just so far away from the bores no?

Gonna rip the colant pipes off tomorrow and I might be able to see better:(

16v_paddy
16-08-2012, 00:40
Can still easily be the gasket, just because it's not buggered between the bores doesn't mean it aint shagged, just look at the pic I posted, you can see where the gasket also seals oil & waterways.
Where the water is collecting, you can see from my pic that there's a waterway close by

172lover
16-08-2012, 01:29
The only place I can see coolant is that little hole and my sump.I can't see it any other place tbh.not even dripping down.


I'll hopefully see better tomorrow with the pipework and strut brace out of the way.


The car isn't overheating so that's a good sign the block/head ain't damaged is it?
When driving it says about 1/4 on the temp gauge.
When parked up after driving she will rise after a couple of minutes.

Wobba
16-08-2012, 16:11
Finding splits in the hoses can be hard sometimes.

I'd have the thermo housing off.

Check it here:

http://i174.photobucket.com/albums/w102/barneywobba/My%2016V/DSC00255-1.jpg

That pipe there ripped off the housing completely as it was so badly corroded from the inside. Was a hard leak to find.

Some leaks may not be visible until the coolant is hot...press the pipes a load and wear gloves as it be hot :D

Check coolant bottle for wetness on the bottom too, it can spray the back of the engine.

May be HG though, but not leaking into bores.

Pic of my first blown HG at that corner where yours is leaking:

http://i174.photobucket.com/albums/w102/barneywobba/My%2016V/DSC00303.jpg

exploding_penguin
17-08-2012, 23:10
this is the exact place my h/g went, i put some rad weld in the coolant to stop the leak, but i wouldnt recommend as a fix, just a temp solution

172lover
04-10-2012, 15:35
Just going at this today as she passed the NCT/mot on monday so I've a year of that now.
Anyway ripped off the thermo....
Green corrosion(??) coming out of the two sensors and around the thermo.
http://i48.tinypic.com/bhx1zr.jpg
In where the pipe fits had all bits of tough rust
http://i48.tinypic.com/30rkx9u.jpg
http://i49.tinypic.com/11l4gnc.jpg

The thermmostat.
Where my fingers are the rubber has holes in it :(
http://i48.tinypic.com/2qav6o4.jpg
Would it be possible that the coolant is leaking from the thermo rubber and going along the head?

I've a new thermo stat(89*C) here and a new rubber so I'm going to try that and hope for the best:)
Hopefully it will stop raining shortly...