Water leak but which part to buy?

Charles Vacy-Ash · Post by **Charles Vacy-Ash** » Thu Feb 24, 2011 5:42 pm

The honeymoon is over. Hanibal, my wonderful 1993 TZD, after giving no hint of trouble for 3,000 miles, has sprung a water leak. Coolant is dripping from the black plastic "water hose junction" at the back of the block on the offside onto the CVJ gaitor. I cannot see any obvious damage to the black plastic bit or any of the hoses, but then I can't see anything much, even with the wheel and splash shield removed. Are there two or three hoses coming into this black plastic component? The big hose that runs forward to the radiator looks fine, but there seems to be at least one pipe with rather expensive looking brading on it coming down from above. I cannot see enough of that to know if it is leaking. I have heard that the black plastic component itself can crack, so am I looking for a new braided hose or a new black plastic junction or both?

I don't see either component advertised on ebay so I guess I am looking at Citroen wallet stripping prices.

I know what you're going to say - get the bits out and have a look, but how DO you get the bits out? there's no room for even a hamster with a socket set. Do I really have to take the engine out just to change a hose!!

citronut · Post by **citronut** » Thu Feb 24, 2011 6:40 pm

i think this is theprice and part No. for that water branch if still availible,

Part Number Description Quantity Price excl. VAT Price incl. VAT Total incl. VAT Selection
00001336G4 WATER INTK TANK 14.02 GBP 16.82 GBP 16.82 GBP

regards malcolm

Way2go · Post by **Way2go** » Thu Feb 24, 2011 7:33 pm

You're providing an excellent BXC service on Cit part numbers and prices Malcolm.

rmattila · Post by **rmattila** » Thu Feb 24, 2011 10:01 pm

citronut wrote:i think this is theprice and part No. for that water branch if still availible,

Part Number Description Quantity Price excl. VAT Price incl. VAT Total incl. VAT Selection
00001336G4 WATER INTK TANK 14.02 GBP 16.82 GBP 16.82 GBP

Could be, but then again..

That part # is for DIESEL FUEL AND 1,905L UNTIL RPO No. 03795, and for DIESEL FUEL AND 1,905L EXCEPT ANTIPOL EGR

Fuel reheater for DIESEL FUEL AND 1,905L SINCE RPO No. 03796 is # 1336 47

And for DIESEL FUEL AND 1,769L UNTIL RPO No. 05637 the part is # 1336 G4 WATER INTK TANK - UNTIL RPO No. 04191 and #1336 47 FUEL REHEATER- SINCE RPO No. 04192

Furthermore, for DIESEL FUEL AND 1,769L SINCE RPO No. 05638 the part is #1336 G4 WATER INTK TANK - SINCE RPO No. 06202 (part # for RPO 05638..06202 is not given in my documentation at all)

For DIESEL FUEL AND 1,769L AND TURBO UNTIL RPO No. 05637 it's again # 1336 47 (the fuel heater one)

and finally for DIESEL FUEL AND TURBO EXCH AND 1,769L SINCE RPO No. 05638 it's the #1336 G4 one.

Those are the basic guidelines, but there are a number of exceptions to them..

All in all, it comes down to checking out whether the part is the one with fuel heater:

or the one without:

-Riku

Charles Vacy-Ash · Post by **Charles Vacy-Ash** » Fri Feb 25, 2011 7:53 am

Thanks Riku and Malcolm.
Its definitely the one without a fuel heater. It looks from the drawing as if there are no less than four pipes meeting at this union.

How on earth do you get them all off AND undo the two nuts holding the union to the engine block? Is it possible to make some room as follows:

support the engine on a trolley jack, undo the engine mounts and lever the engine forward a bit, without disconnecting everything else you would normally need to disconnect when taking the engine out?

citronut · Post by **citronut** » Fri Feb 25, 2011 8:07 am

im sure i have done these from under the wheel arch for part and underneath for the rest (no not the snooze) but for what you cant get at from under the wheel arch,

and i dont recall that fuel heater type, when i looked on service citroen i misstook that one as the thermostat houseing,

also for some reason i thought it is the 1.769 TD

regards malcolm

rmattila · Post by **rmattila** » Fri Feb 25, 2011 8:50 am

citronut wrote:and i dont recall that fuel heater type

Of my three diesel BX:s two (both having XUD9:s from 1990) are equipped with the fuel heater type part and the remaining (having XUD7 from 1988) with the other type. When it gets below -20 °C, I only use those with the heater, and at temperatures below -30 °C (rare, but they occur every now and then even here on the south coast) even the winter-quality diesel fuel tends to turn solid and block the filters, and it is very risky to get on the road if the car is not equipped with a fuel heater.

The new cars tend not to be, with predictable consequences.

KevR · Post by **KevR** » Fri Feb 25, 2011 8:59 am

Just a thought - are you absolutely sure it's not the water pump leaking...?

rmattila · Post by **rmattila** » Fri Feb 25, 2011 9:04 am

KevR wrote:Just a thought - are you absolutely sure it's not the water pump leaking...?

Good point.

Post by **Defender110** » Fri Feb 25, 2011 11:23 am

KevR wrote:Just a thought - are you absolutely sure it's not the water pump leaking...?

This was my initial thoughts too?

Charles Vacy-Ash · Post by **Charles Vacy-Ash** » Fri Feb 25, 2011 7:20 pm

Thanks chaps. I think you are saying try the waterpump first. I have looked through the 100per cent complete (according to only previous owner) service history and there is no mention of a new water pump even though there is mention of timing belt changes. So this water pump has done 130K miles. Probably knackered anyway.

KevR · Post by **KevR** » Sat Feb 26, 2011 11:26 am

Very likely - it's a common failure point, hence my suggestion to make absolutely sure it's not that before you start laying out cash on other parts.

Vanny · Post by **Vanny** » Sat Feb 26, 2011 3:19 pm

Water intake housing change, 1hr, £25 (including glycol), relatively straight forward.

Water pump change, 4hrs, £70 in parts (pump, £15, belt £15, tensioner £20, glycol £10, first aid kit, £10), considerably harder job to do.

I think i would want to make absolutley certain where the leak was coming from!

tim · Post by **tim** » Sun Feb 27, 2011 6:09 pm

I had my pump start leaking on the BX19 recently (see thread back before Xmas time somewhen). There was a steady drip coming from the bottom of the cambelt cover and it was fairly obvious what the cause was. There were no hoses to get in the way of the drip's flight path so diagnosis was fairly clear.

Charles Vacy-Ash · Post by **Charles Vacy-Ash** » Mon Mar 07, 2011 11:08 am

After some delay I have finally had a chance to find out more about where the leak is coming from. Its coming from the joint between the plastic water manifold/hose junction and the block. So I definitely need part number is # 1336 G4 WATER INTK TANK . I tried AEP but they don't have it. Anyone got any ideas where I can get one? I am told these are not worth buying second hand because they deteriorate (which is presumably what has happened to mine!). I am also told that, while the O ring that acts as a gasket may have gone, more likely the plastic moulding itself has distorted so a new o ring won't fix it.