In my Astra J, there is little plastic drain tap (finger operated!) at the bottom, driver side of the radiator. You can slip a tube (about little finger in diameter) over the tap outlet to collect the coolant in a container. Don't do this when the engine is still hot! Leave at least 30 mins or more before doing this and crack the coolant tank lid open to relieve any residual pressure in the system. I've got mousse or mayonnaise in my coolant bottle as well. Is this a common Astra J fault?
9 times out of 10 the foam in the expansion tank is caused by the oil cooler under the exhaust manifold. Replacing the seals will fix it. However, it can also be caused by the head gasket blown. A TK (block ) test will sense exhaust gasses at the expansion tank and tell you where your luck lays.
Sure thanks for the comment, so I should clarify just in case and to let everyone know the vid is not for flashing or draining the coolant, this video it’s only for changing the expansion tank for the coolant. Thanks.
I order the part and it was the wrong bit because the one they send didn't have a floater inside, so i sent it back and asked them to send me the correct one. ill update you on that.
@@DaringBeefcake -can you help me. I have a problem with coolant bottle or sensor.The bottle is properly full,but on shows message"Coolant level is low...etc". I already replaced the old sensor but message still exist.Do I need to replace the bottle?!
@@milosmirovix9753 In my case I had to replace the bottle as the magnet inside the bottle was somehow not floating, also make sure that if you buy a new expansion tank it has the magnet inside otherwise you will keep having the same issue as some tanks dont come with the magnet.
@@DaringBeefcake -for the first time I heard for "magnet" in the bottle!?!! Thank you,before I buy I'll ask guy in a store for that! Like I said I changed sensor in the bottle and still notification exists on the screen.
Hi well the way I do it is basically after having replaced the part that you need to change and lost the coolant, I fill the system with coolant all the way till the max mark on the expansion tank, then start the car and run it until you have hot air coming out of the vents inside the car, the coolant lead is open while I do that, and also while the car is running i check if the coolant is going down and top it up if needed, keep running the car until the radiator fan comes on and runs its cycle, keep checking the level of coolant its important as well as the coolant gauge making sure it does not overheat. If you put to much coolant it can overflow as the cap is not on, but be careful as it can be extremely hot and cause burns once the coolant fan goes off and you have nice hot air inside the car, switch off the car, check the level top up if needed,then put the cap on and test drive. make sure no overheating as that would mean air in the system and can be damaging to ur engine. check the coolant the day after to make sure is at its correct level. hope this helps.
Thanks men! Now i am confident enough to change the reservoir and sensor myself 👍👍👍
Glad I could help and you welcome..
Mines got the same sludge its oil that's why it wont come off is it normal suppose it's a tiny amount
Just did this to my astra thanks to this video it saved is a load of time and mess 😊
Glad it helped:)
In my Astra J, there is little plastic drain tap (finger operated!) at the bottom, driver side of the radiator. You can slip a tube (about little finger in diameter) over the tap outlet to collect the coolant in a container.
Don't do this when the engine is still hot! Leave at least 30 mins or more before doing this and crack the coolant tank lid open to relieve any residual pressure in the system.
I've got mousse or mayonnaise in my coolant bottle as well. Is this a common Astra J fault?
Thank you for letting us know, will consider that in future.
Exact same problem here. Had to replace the tank (which came with a new sensor anyway).
Yes, but some tanks don’t come with a sensor you need to make sure it does if your car has the plug. Thanks for the. Comment..
@@DaringBeefcake that's true. I made sure to replace both because I didn't want to do the job twice. Since then the problem has gone away.
9 times out of 10 the foam in the expansion tank is caused by the oil cooler under the exhaust manifold.
Replacing the seals will fix it.
However, it can also be caused by the head gasket blown.
A TK (block ) test will sense exhaust gasses at the expansion tank and tell you where your luck lays.
@@leakyboatent this had mould all around rather than foam.
The clip you removed at the start i dont suppose you know where to buy these sa i cant seem to find them anywhere
am sorry am not sure may just a dealer part.
Syringe the coolant out saves messing with hoses.
Thanks for the suggestion:)
Is this the same instruction as the GTC model?
I couldn’t really say sorry. But probably it is..
@@DaringBeefcake all sorted now 💪
@@MichaelStanfield81 fantastic
@@MichaelStanfield81 Was this the same method ? As I need to do this for my GTC ,thanks
Wrong way to drain/ flush coolant and also should have let the car cool down properly before attempting it.
Sure thanks for the comment, so I should clarify just in case and to let everyone know the vid is not for flashing or draining the coolant, this video it’s only for changing the expansion tank for the coolant. Thanks.
Have you changed the coolant tank already? Did it work?
I order the part and it was the wrong bit because the one they send didn't have a floater inside, so i sent it back and asked them to send me the correct one. ill update you on that.
@@DaringBeefcake -can you help me.
I have a problem with coolant bottle or sensor.The bottle is properly full,but on shows message"Coolant level is low...etc".
I already replaced the old sensor but message still exist.Do I need to replace the bottle?!
@@milosmirovix9753 In my case I had to replace the bottle as the magnet inside the bottle was somehow not floating, also make sure that if you buy a new expansion tank it has the magnet inside otherwise you will keep having the same issue as some tanks dont come with the magnet.
@@DaringBeefcake -for the first time I heard for "magnet" in the bottle!?!!
Thank you,before I buy I'll ask guy in a store for that!
Like I said I changed sensor in the bottle and still notification exists on the screen.
@@milosmirovix9753 Yes there is a device inside that operates the sensor and If that is not working then the sensor wont work.
does anyone know where you can purchase the clip that hold tank to bracket, mine pinged off and I cannot find it
A quick google search will reveal wonders, Vauxhall Astra J expansion tank clip or something like that and am sure you’ll find some positive results.
@@DaringBeefcake thank you, I will have a look online, see what I can find
@@richardhanney9998 cool, I found it that way 😉
how do you bleed the system,cheers
Hi well the way I do it is basically after having replaced the part that you need to change and lost the coolant, I fill the system with coolant all the way till the max mark on the expansion tank, then start the car and run it until you have hot air coming out of the vents inside the car, the coolant lead is open while I do that, and also while the car is running i check if the coolant is going down and top it up if needed, keep running the car until the radiator fan comes on and runs its cycle, keep checking the level of coolant its important as well as the coolant gauge making sure it does not overheat. If you put to much coolant it can overflow as the cap is not on, but be careful as it can be extremely hot and cause burns once the coolant fan goes off and you have nice hot air inside the car, switch off the car, check the level top up if needed,then put the cap on and test drive. make sure no overheating as that would mean air in the system and can be damaging to ur engine. check the coolant the day after to make sure is at its correct level. hope this helps.
@@DaringBeefcake thankyou
There is a bleeder screw on the radiator
@@TomJD1995 cheers
@@TomJD1995 where is it located
Bloody hell is there any oil in that engine 😂😂😂😂
No there isnt any. hahahahha