 | Home > Puma (Tdci) > Coolant fill : Vacuum filling only or any alternative? |
 
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 4212   
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If you fill it conventionally, you'll probably need to do a bit of work to get all the air locks out, but it certainly can be done. You need to fill it as best you can,but then get the engine properly up to running temp to burp out the bubbles. That'll involve driving it and stopping to check the level as it's very hard to get it hot otherwise.
Incidentally, my WSM does give a filling procedure that's not vacuum, but it doesn't work as the engine doesn't get hot enough. 2007 110 TDCi Station Wagon XS |
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17th Mar 2023 8:19am |
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| MatLandy Member Since: 11 Sep 2020 Location: Paris Posts: 184  
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indeed there are 2 options in the WSM.
"Cooling System Draining, Filling and Bleeding" or "Cooling System Draining and Vacuum Filling" Just wondering how wise people do it in real life 
/Mat |
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17th Mar 2023 9:03am |
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| MartinK Member Since: 02 Mar 2011 Location: Silverdale (Lancashire/Cumbria Border) Posts: 2665 
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Just done mine as it happens!
Drained from the fuel cooler - was a piece of cake, having taken out the bleed screw at the rear nearside of the engine bay. Heater control in the dashboard on "hot". Just filled it through the expansion bottle. Then re-installed the bleed screw. I measured the coolant that came out against the coolant I put back in and I was a cupful short. So I carried a bottle of diluted coolant in the car and topped it up twice after short journeys. I've now put as much in as I took out, and the level is staying static. I had bought 5 litres of Castrol Radicool SF Antifreeze (from Opie site sponsor), and I still have an unopened bottle. I diluted 50/50. No problems. Defender "Puma" 2.4 110 County Utility (possibly the last of the 2.4's) |
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17th Mar 2023 2:52pm |
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| MatLandy Member Since: 11 Sep 2020 Location: Paris Posts: 184
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Right thanks, that's encouraging, will proceed and to the same then
/Mat |
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17th Mar 2023 4:15pm |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3643 
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ditto
did my coolant change and had no issues bleeding, make sure the heater is on hot, fill from the header tank with the bleed screw out, refit the bleed screw when coolant comes out of it and continue to the full level on the header tank, after filling, again make sure the heater is on hot when you run it up and just top up the header as the coolant level drops when the thermostat opens, top up the header for the first couple of runs until it all settles to the correct level. DEFENDER 90 TDCI XS, I hope everyone is well and your land rovers make you happy |
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17th Mar 2023 7:23pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20413
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As above, gravity will do it just always keep an eye on the level in the header tank.
Carry some coolant around with you (only add when cold of course) and youโll be fine. Ideally donโt go too far at first other than running it up to temp and keeping an eye on the level. Other than that not a problem youโll soon know when it settles where it should permanently. Follow the manual procedure with the bleed screw and everything else though as others mentioned. $W33T $0U7H3RN $UG4R ๐ฌ๐ง๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ๐ด๓ ง๓ ข๓ ท๓ ฌ๓ ณ๓ ฟ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ๐ฎ๐ช๐บ๐ธโฝ๏ธ๐ข๏ธโ๏ธ๐งฐ๐ช |
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18th Mar 2023 8:56pm |
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| MatLandy Member Since: 11 Sep 2020 Location: Paris Posts: 184
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Ah OK. Will do as suggested. Not sure why this coolant thing had me worried so much, just an area Iโm not familiar with I suppose ๐
/Mat |
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18th Mar 2023 9:15pm |
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| HardCharger Member Since: 03 Mar 2013 Location: Manila Posts: 739  
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Once you've opened the bleed screw and uncoupled the fuel cooler lines, is it OK to first flush the system with distilled water to flush out any corrosion or crud? My system seems to have some corrosion in it and planning to do a coolant change but not before flushing with a few liters of distilled water.
If it is OK, once the water comes out clean, I can now slowly add coolant and close the drain points once the "pure" coolant comes out consistently, right? By the way, which hose do I disconnect from the fuel cooler again? I don't have the WSM handy right now. My truck is a 2.4 Puma |
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20th Mar 2023 1:26am |
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| MatLandy Member Since: 11 Sep 2020 Location: Paris Posts: 184
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You need to disconnect the 2 lowest pipes. The upper ones are fuel pipes, so you will quickly know if you got it wrong ๐
Also, you need to disconnect a third pipe, the one going to the oil cooler as there is coolant fluid trapped here that cannot get out through the pipes on the fuel cooler.  Click image to enlarge /Mat |
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20th Mar 2023 6:48am |
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| HardCharger Member Since: 03 Mar 2013 Location: Manila Posts: 739
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Thanks, Mat!
This really helps!  |
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21st Mar 2023 2:41am |
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| HardCharger Member Since: 03 Mar 2013 Location: Manila Posts: 739
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One question, won't there still be dirty coolant trapped in the fuel and oil cooler? Or do I re-connect everything, run on distilled water then drain until all clear then put in new coolant?
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22nd Mar 2023 3:48am |
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