Technical Thermostat
- Thread starter Slick16482
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Technical Thermostat
That's extreme.
You can totally do it, it's quite working really well, pressure pushes the coolant and that spot it's quite the highest so air sits around there. When you undo the screw first air comes out so good bleeding. Just careful to only loosen the screw, not get it off completely, that's the key. If you do 'manage' to get it off completely just pull away so hot coolant doesn't get you.
I always undo that screw after topping up coolant, bleeding and driving around a bit!
NO
on the ducato type of bleed screw system if coolant is pressurised the screw can seal then dramatically releases very hot coolant(because its under pressure)-big risk of burns.
Worth remembering different people have different levels of skill and not suggest procedures that might result in injury.
Ok. Then the best way to bleed all the air out, safely is this. After running the engine so air is pushed up in the system (around bleeding screws), wait 10 mins so coolant cools down a little then take down the coolant filling cap. Careful, not out of a sudden because there still is a little pressure in. But on the first twists of cap the pressure goes 'Hiss', so take the cap off. (Everything should be ok now, coolant stays in. If coolant come gushing out, there is a problem on the system, pe system pressure is too high)
Then you can work the bleeding screws. First the lower positioned one, the radiator one. Take it out completely. If coolant comes out there, put screw back. If coolant doesn't come out, top up the level untill it comes out there, then put back the screw. Next, the heater matrix bleeding screw, do the same. Then do the coolant level. If it's too much, take some out. Remember, at that time coolant is still not cold and hot coolant occupies larger volume. So best way to check the level that should be between Min and Max is first thing in the day, before starting the engine. Next days, first thing, verify if level stays the same.
Then you can work the bleeding screws. First the lower positioned one, the radiator one. Take it out completely. If coolant comes out there, put screw back. If coolant doesn't come out, top up the level untill it comes out there, then put back the screw. Next, the heater matrix bleeding screw, do the same. Then do the coolant level. If it's too much, take some out. Remember, at that time coolant is still not cold and hot coolant occupies larger volume. So best way to check the level that should be between Min and Max is first thing in the day, before starting the engine. Next days, first thing, verify if level stays the same.
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