Is There A Bleed Valve In Cooling System?

[jtonky]

Hi, i had a diesel 306 before, right in front of you when you opened the bonnet you had a u bend in the water pipe returning to the rad, on it was a valve. Un screed the small plastic value, water came out and any air trapped in the system.

 

My AX 14 D echo does not seem to have this. Mind you totally deferent concept i know. Anyways iv searched Google, and from that i have learned this is OR is not one and the Haynes manual does not show you if there is one? Anyways if you have found one on your car, please can you be kind enough to tell me where to look? do i need to get underneath?

 

If there is no valve or i cant find it, how do i go about checking / getting rid of the air pocket? Open the air cap every now and then? :blink:

[Guest john64]

yes there is a bleed valve or even 2 from memory. we had a 1.0 ax and i sure that there are some.

have you got a haynes manual as i think that shows them.

or a picture of an engine bay, i could point them out (in theory)

 

taking the cap off and a quick drive should force the air around and out

[jtonky]

thanks for that yeah i need to get a manual, might invest in one from ebay... but take cap off and drive round the corner u say, ill give it a go :rolleyes:

[jtonky]

no joy. I have this problem where i drive like for 20 mins then my lol water sensor comes on. but can go out again. stop, take cap off and still ahve pressure but the water then bubbles up a bit so sensor goes off. And so the cycle starts again, werid. Any ideas?

[Guest john64]

no joy. I have this problem where i drive like for 20 mins then my lol water sensor comes on. but can go out again. stop, take cap off and still ahve pressure but the water then bubbles up a bit so sensor goes off. And so the cycle starts again, werid. Any ideas?

 

not a dodgy connection to the water sensor is it?

take it off and try to clean the connections

[jtonky]

I have been doing some googling and i dont think its the water sen. It correctly reads that i have a lock of water. Iv bene doing some monitoring and i seem to be loosing water sloly (when hot) it seems out through the release mechanisum on the cap. Question is why is the preasure getting so great...

 

Some one sugested on an other forum get a new cap from cit. Could be a faulty cap which is cheap to replace, so might do that. im still waiting on my haynes manual to origentate me but the onlt other thing i can think its is on of these.

 

1. Head Gasket on way out (but water does not seem discouloured and oil cap looks fine

2. Air pocket in system causing havoc but then i cant find a bleed valv tried driving a bit with the cap off, always heat heat out through the matrix

3. Temp sens faulty not monitoring the temp right and water is boiling, not turning on the fan to cool it down. and or loose cabling as u say.

4. Temp sens ok and fan buggered but then i should be getting a dash light on saying STOP! look at the temp u numpty!. But again i dont have a temp gage just a warning lap, helpfull.

 

So its strange, i think the water sensor is comming on coz im spitting watter through the release cap. So why am i spitting water.

So ill replace cap, see what happens, if not, replace temp sensor having checked connection to it and the fan. Failing that run it till it dies :huh:. HELP!

 

p.s. is there any way i can check if the fan is working without ragging the hell out of it for 20 mins while idol?

[jtonky]

ok problemsolved.

 

got a new cap from main dealer, did not fix.

 

decided to check that the fan and fan switch was working ok, yes it was.

 

decided to check my thermostat. followed the haynes manual took out the battery for access, unscrewed the 3 bolts holding the thermostat caseing, took out the thermostat and let the water pee out every where. cleaned it up as it seemed a little gunked up. then i put it in a pan and bolied the water and watched it open and close. put it back in, re connected everything. re filled the cooling system properly.

[jtonky]

ok problem solved.

 

got a new cap from main dealer, did not fix.

 

decided to check that the fan and fan switch was working ok, yes it was.

 

decided to check my thermostat. followed the haynes manual took out the battery for access, unscrewed the 3 bolts holding the thermostat casing, took out the thermostat and let the water pee out every where. cleaned it up as it seemed a little gunked up. then i put it in a pan and boiled the water and watched it open and close, so its working. put it back in, re connected everything. re filled the cooling system properly.

I located the bleed points. one is if you stand in front of your car, look on the top of the rad on the right, it’s a plastic screw set flush on the top, but I used the other one. That is on the top left hand side, set along bulk head. It’s a pipe witch comes out of heater matrix. Its just a pipe with a screw in the end, cant miss it . I unscrewed it and left it a bit and then and lowered the pip and let the water get pumped out. Did it again once engine was up to temperature. Problem has not come back.

 

So boys and girls what I had was a build up of pressure cause by the Citroen garage not bleeding the air properly, luckily no damage caused as the cap was doing its job, letting the air pressure out, along with a sheet load of water from my tank too... Now that its fixed I can really see the problem. Before when ever I took the cap off the rad it went PISSSSSS BLOB BLOB BUBBLE PISSSS BUBBLE PISSSS BLOB BLOB LOB. Now I only get a short pist. So there we are hope this helps some one in the future. :rolleyes: