can anyone help
i recently decided to replace the coolant in my xantia but was beaten to it by the radiator bursting.
i have since replaced the radiator (more fun in cramped engine bay) and the coolant but cannot find the bleed screws shown in the MANUAL OF DOOM (haynes). i am assuming that the haynes manual shows the 1.9td and mine is the 2.1 as the photo shows the header tank in a different position to mine. as my header tank is higher than the cooling components i cant see me needing the lemonade bottle to fill it, but are there bleed screws on this engine elsewhere that i need to open. according to haynes my thermostat will open at 90 deg but my faithful engine refuses to heat to more than about 85. so i am concerned about air pockets.
any help is as always appreciated
steve
steve kerr
coolant refill
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steve,
one way to find out if you've got air in your coolant system is to put the heaters on full whack, if you are still getting cold air after 5 minutes, then you could well have some air in system.
there should be a bleed screw on the top of the engine, by the themostat, it should look like a dust cap from a tyre!, failing that there is normally another one on one of the rubber pipes coming from the themostate, but this one looks nothing like a bleed cap, its round and normally got a grouve in it.
hope this helps.
dom
one way to find out if you've got air in your coolant system is to put the heaters on full whack, if you are still getting cold air after 5 minutes, then you could well have some air in system.
there should be a bleed screw on the top of the engine, by the themostat, it should look like a dust cap from a tyre!, failing that there is normally another one on one of the rubber pipes coming from the themostate, but this one looks nothing like a bleed cap, its round and normally got a grouve in it.
hope this helps.
dom
A trick I've used for years when filling Citroen cooling systems is to fill the header tank/filler bottle to the brim & the reduce level back by using the bleeder screws.
Sounds a bit extravagent but when you think about it, often it means that the water level is above the top of the heater matrix when you do this and so prevents water from getting trapped in there. As a result, instead of getting air which eventually usually ends up blowing coolant in all directions, you may only spill half a cupful & in so doing purge the entire system. If that fails; then you reach for the "header bottle" which basically does the same thing only a little more so.
Alan S
Sounds a bit extravagent but when you think about it, often it means that the water level is above the top of the heater matrix when you do this and so prevents water from getting trapped in there. As a result, instead of getting air which eventually usually ends up blowing coolant in all directions, you may only spill half a cupful & in so doing purge the entire system. If that fails; then you reach for the "header bottle" which basically does the same thing only a little more so.
Alan S
Alan S,
That sounds similar to what i used to do on my Peugeot 106, i used to fill the system slowly with heater set to HOT, and fill it right to the brim of the radiator cap then after refitting the cap start the engine. At this point i then opened all the bleed screws one at a time starting with the lowest one, allowing all the air out until coolant flowed out. Then, after running at a fast idle for a few minutes with the heater on, i re checked the level in the radiator after allowing the engine to cool a little. It worked a treat every time!<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_approve.gif border=0 align=middle>
Regards, Rich.
That sounds similar to what i used to do on my Peugeot 106, i used to fill the system slowly with heater set to HOT, and fill it right to the brim of the radiator cap then after refitting the cap start the engine. At this point i then opened all the bleed screws one at a time starting with the lowest one, allowing all the air out until coolant flowed out. Then, after running at a fast idle for a few minutes with the heater on, i re checked the level in the radiator after allowing the engine to cool a little. It worked a treat every time!<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_approve.gif border=0 align=middle>
Regards, Rich.