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Old 07-24-2013, 06:55 PM   #1
Weste46
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Cooling system bleed

I just replaced my water pump, but I saw that the way the sticky says to bleed is to fill the tank until it pours bubble-free coolant from the bleed screw. I'm thinking these seems rather messy, and I would have to syphon excess out after I'm done.

I saw elsewhere that I could run the engine and just loosen the bleed screw until it spews coolant. I tried this way, but the bleed screw constantly spews vapor, for a long time. I don't ever get pure coolant coming out, only little squirts from time to time. Is this just air, and I haven't given it enough time to bleed? Or will this never spew 100% coolant mixture?

Thanks for any help!
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Old 07-24-2013, 07:02 PM   #2
Yewzer B Lewzer
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Cooling system bleed

Do it the right way as the sticky shows. You are risking your engine using the alternate method just to save a little mess?


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Old 07-24-2013, 07:30 PM   #3
Weste46
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Re: Cooling system bleed

I didn't realize I was "risking" anything. Will do!
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Old 07-24-2013, 07:40 PM   #4
Yewzer B Lewzer
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Cooling system bleed

Yep. Air pockets in the system can cause overheats which can warp the head and cause head gasket leaks. $$$$


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Old 07-24-2013, 07:40 PM   #5
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It's dirty, yes, but it's infinitely easier than on, say, an E28 or an E12. In those cars, you bleed it while the car is on, so the fan is spewing it everywhere as you loosen the screw and watch for bubbles.
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Old 07-24-2013, 07:40 PM   #6
Chrsb5
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Cooling system bleed

It's not much of a mess


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Old 07-24-2013, 07:42 PM   #7
aldeghij
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Yeah, not messy at all. Just pour slllooooowwwly and all should be fine.
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Old 07-25-2013, 12:07 AM   #8
Weste46
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Re: Cooling system bleed

Quote:
Originally Posted by Yewzer B Lewzer View Post
Yep. Air pockets in the system can cause overheats which can warp the head and cause head gasket leaks. $$$$


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Right, I know. I'm saying I didn't realise that another way of bleeding wouldn't work just as well.

It's all done now, not too messy.
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Old 07-25-2013, 07:37 AM   #9
Yewzer B Lewzer
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Cooling system bleed




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Old 07-25-2013, 11:58 AM   #10
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Yeah if you go slow it's not that messy. The most important thing is taking your time.
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Old 07-26-2013, 12:35 PM   #11
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I'm going to say this ONE more time.
Remove the bleed screw.
Pour coolant into the tank until the level rises to the SCREW hole!
Stop and wait, as the coolant level in the hose will drop as air comes out.
Keep pouring and waiting until the level stops dropping.
DONE!:
This only requires a little bit of patience and makes zero mess!
If the car is level, you won't need to add but maybe a little more after one heat/cool cycle. If you like to raise the nose for some reason, it may get overfilled requiring some coolant removal. The float should not be pinned against the upper stop.
There is no need to spill a single drop!
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