Hi guys,due to do a coolant change on my mini Cooper s r53
Rather than having to go through all the usual stuff taking bottom hose off etc
And the mess that comes with that,I found a video on you tube about a oil extraction pump that's used to suck oil out of engine via dipstick tube, there are some of these pumps on eBay!
I was thinking could this be used to withdrawn all the coolant from the mini via the expansion tank!?
I've got a eezibleed bleed kit that is used for brake fluid changing,one off the spare caps is a exact fit for the expansion tank.I could then pass the tube from the pump through the cap,seal it with the washers and nuts from ezzibleed kit,then either fill expansion tank so tube is below coolant level and this would create a vacuum when the pump handle is pumped and then withdraw the fluid into the filler bottle,then refilland bleed as normal after extraction of all the fluid
Your thoughts guys??
I think the factory use something similar process to get the air out of the system once its filled to speed up the normal and lengthy bleeding process, I dont think it would work for draining it though and you certainly wouldnt flush out any bits and silt that might be in the system.
Give it a go I suppose and try, but I cant see it being fully effective.
Yeah I might just try it and see how it works, think alot of people just detach the bottom
Hose and think they are getting all the coolant out, when they ain't, maybe this method would by using the vacuum of the pump to suck all the coolant out??
The normal method is to disconnect the bottom hose, then if you suspect the coolant is dirty or has contaminates, stick a hose pipe in the filler neck and turn it on and let the water just flow through the system washing it all out, then when its clean, fit the hose and refill with the correct coolant.
Well yeah I know thats the way to do it, but
Isn't there still coolant left in the engine block that isn't
Removed by just unhooking the bottom rad hose and flushing?? I've read on posts
This is the case
The 3 bleed valves on R50 Cooper/One:
In the radiator top hose (left).
In coolant pipe at the right hand front corner of the cylinder head near thermostat housing/filler cap.
The 3rd heater hose bleed valve is beneath the battery tray.
(R53 Cooper S owners should note the MCS does not have the 3rd heater hose bleed valve like the One and Cooper have beneath battery tray and their battery is in boot/trunk!).
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