Best way to the bleed cooling system?

[danmm7]

I replaced the thermostat, water pump, some hoses and installed the APR front heat exchanger.

I used a vacuum based coolant filler but i am not sure if i got all the air out. Car is not overheating, the cabin warms up nicely but I hear lots of "water moving" like sounds when i drive. Does this mean I have trapped air?

Other than opening the bleeder bolts on the supercharger, what else do i need to do to make sure that there is no air trapped in the system?? Any other bleeding valves? Any tips?

Thanks!

[Jflow23]

Engine needs to be over 2k rpm when you open the screws...2 man job. It may burp by driving too.

[danmm7]

Ok. This is for the supercharger side of the cooling system.
How do we bleed the engine side? How do we get air out of the heater core? Any other bleed valves?

Thanks!

[weaselp1]

Ok. This is for the supercharger side of the cooling system.
How do we bleed the engine side? How do we get air out of the heater core? Any other bleed valves?

Thanks!

PM sent

[Jay@JXB]

PM sent

Awww post stuff here so others can see it


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[whiped]

See the last bit of this post: http://www.audizine.com/forum/showth...al-photos-tips

[S4'ed]

Try the vacuum purge & fill again. But you have to dump out all the coolant first.

[infinkc]

Turn the heater on then shut the car off so the heater valves are open.

[weaselp1]

Awww post stuff here so others can see it


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I have the coolant refill procedure in a PDF document from elsawin ...can't post pdf files. Please pm me and I can email it to you!

Thanks,
Mike

[mrb5_supra_wrx]

I have the coolant refill procedure in a PDF document from elsawin ...can't post pdf files. Please pm me and I can email it to you!

Thanks,
Mike

Can I get that pdf in a pm too? Lol

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[weaselp1]

Can I get that pdf in a pm too? Lol

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PM me your email ...Can't send PDF files in PMs

Thanks!

[rgvsq5]

Reviving an old thread because it seems there is a special tool required to open supercharger bleed screws. They appear to be philips, but even using a large philips bit I believe I may have stripped one of them out. They are in there tight! Help?

[14S4GWM]

Reviving an old thread because it seems there is a special tool required to open supercharger bleed screws. They appear to be philips, but even using a large philips bit I believe I may have stripped one of them out. They are in there tight! Help?

Theres a thread from whipped where he replaced them with some modified regular bolts.

[mintytoo]

Reviving an old thread because it seems there is a special tool required to open supercharger bleed screws. They appear to be philips, but even using a large philips bit I believe I may have stripped one of them out. They are in there tight! Help?

I used a manual impact driver from harbor freight, using the Phillips #3 bit. It took a couple of whacks with a hammer but it comes loose. https://m.harborfreight.com/impact-s...ase-37530.html

[Corydms7]

I used the schwaben coolant purge tool. The one you hookup to an air compressor. You can visually see the hoses fully collapse. I use like 90-100psi. Not sure if this fully gets air out, but it seems alright.

- - - Updated - - -

Have a full bucket of coolant and then after you create the suction you open another valve and only coolant gets sucked back in with a hose you dunk in a bucket of coolant

[Slvrbul8]

I thought the APR HX was supposed to be self-bleeding with no human intervention required?

[djn876]

I thought the APR HX was supposed to be self-bleeding with no human intervention required?

That feature is to maintain a path for any residual air, it's not a replacement vent for the whole system, it's not even at the high point. It's just to help keep the HX from getting air bound. If it was significantly drained/filled, it needs a full system bleed.

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