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Bleeding the coolant system

 
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Old 01 Mar 2018, 07:35 pm
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Join Date: May 2008
Posts: 142
Question Bleeding the coolant system

Hi Everyone,

I bought a no spill funnel mentioned in the overheating threads. After a few cycles most of the air bubbles are out.

1. Do I leave the funnel with 50/50 in the radiator until it cools or remove while hot?

2. When its cold should the filler cap and elbow be full of coolant?

3. Is coolant ever taken from the reservoir tank?

I'm using the Mopar HOAT from the dealer.

Thank you in advance!
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2006 PT touring edition, 5 spd manual, 140K, MSD 8.5 mm wires, Champion plugs
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Old 02 Mar 2018, 07:03 am
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Join Date: Dec 2017
Posts: 240
Default Re: Bleeding the coolant system

Quote:
Originally Posted by discovering06 View Post
Hi Everyone,

I bought a no spill funnel mentioned in the overheating threads. After a few cycles most of the air bubbles are out.

1. Do I leave the funnel with 50/50 in the radiator until it cools or remove while hot?
If you have time, leave it it installed if hot removal will cause a coolant spill.

Quote:
Originally Posted by discovering06 View Post
2. When its cold should the filler cap and elbow be full of coolant?
Yes, this is a closed system where the cooling system has all air removed. As coolant expands, it is pushed into the overflow bottle. As it cools, it is pulled back into the cooling system.

Quote:
Originally Posted by discovering06 View Post
3. Is coolant ever taken from the reservoir tank?
Yep,see above. After a few hot / cold cycles, the level may drop a bit as the final air is removed from the cooling system.

As a side note, thermostats with a " jiggle pin " are much better in allowing air to escape than regular ones. Also, while filling I elevate the RF of car so cap is high and air escapes.
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Old 02 Mar 2018, 02:55 pm
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Default Re: Bleeding the coolant system

Thank you for the informative reply!
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