Bleeding Coolant?
Thread Starter
Senior Member
Joined: Jan 2008
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From: Phoenix
E55
Bleeding Coolant?
Is there an easy way to bleed the coolant? Just replaced my HE and pump and suspect there may be an air bubble or two.
My WIS is acting up and a search of the forum didn't bring anything up detailed enough. Thanks.
My WIS is acting up and a search of the forum didn't bring anything up detailed enough. Thanks.
MBWorld Fanatic!
Joined: Feb 2007
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From: Phoenix by way of Texas
2003 E55 AMG
I'd give Chris a call over at Floored Fab; he is back off vacation but will be heading out again on Wednesday.
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Joined: Dec 2007
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From: Denver, CO
Formula Mazda, Beast Junior...400HP 135i
This thread has the info you need:
https://mbworld.org/forums/showthrea...highlight=pump
All you need is some clear hose of the appropriate size (Ace Hardware) and enough wire to jump the HE pump to the battery in the trunk or a convenient 12V power source to jump to so you don't have to jump all the way to the trunk.
It is very easy and you will be surprised just how much air you can get out of the system.
https://mbworld.org/forums/showthrea...highlight=pump
All you need is some clear hose of the appropriate size (Ace Hardware) and enough wire to jump the HE pump to the battery in the trunk or a convenient 12V power source to jump to so you don't have to jump all the way to the trunk.
It is very easy and you will be surprised just how much air you can get out of the system.
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Joined: Aug 2005
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From: Southern Cali (Ontario)
I have read multiple ways of bleeding the system..
One thing is for sure.. air bubbles do exist.
I have chanced my HE on my E55 2 times and once on my C32 and about 3 pumps on both cars.
I don't really do anything special other than ensure I pour water in the reservoir tank and turn on the car and let it run.
the trick is to turn on the heater full blast and let the car run with the heater on for a few minutes.
Eventually the air bubbles will rise to the reservoir tank and you will notice you need more coolant or water.
I have had to add water even 1 or 2 days after installing a new HE. But the pump install does not require as much water replacement.
I confirmed I had air bubbles through data logging and My IATs were extremely high for a car with a larger HE.
Soon as we let the car running with the heater for a few minutes, the IAT's started to drop and level out.
I would say doing the heater trick on the day of the IC pump installation and few other times a day later or so would not hurt.
One thing is for sure.. air bubbles do exist.
I have chanced my HE on my E55 2 times and once on my C32 and about 3 pumps on both cars.
I don't really do anything special other than ensure I pour water in the reservoir tank and turn on the car and let it run.
the trick is to turn on the heater full blast and let the car run with the heater on for a few minutes.
Eventually the air bubbles will rise to the reservoir tank and you will notice you need more coolant or water.
I have had to add water even 1 or 2 days after installing a new HE. But the pump install does not require as much water replacement.
I confirmed I had air bubbles through data logging and My IATs were extremely high for a car with a larger HE.
Soon as we let the car running with the heater for a few minutes, the IAT's started to drop and level out.
I would say doing the heater trick on the day of the IC pump installation and few other times a day later or so would not hurt.
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Joined: Jan 2004
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
Supre, do you have a totally separated system or is it still shared between radiator fluid system?
You would have a separted system if you have a little tiny aftermarket reservoir mounted up top by the radiator.
I am thinking with Renntech, you still share system coolant.
Heater trick would help in that case for sure.
Just checkin.
You would have a separted system if you have a little tiny aftermarket reservoir mounted up top by the radiator.
I am thinking with Renntech, you still share system coolant.
Heater trick would help in that case for sure.
Just checkin.
Thread Starter
Senior Member
Joined: Jan 2008
Posts: 291
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From: Phoenix
E55
Thanks for the info guys. I am splitting the system next week with a nice little custom reservoir... not as elaborate as chiromikey's but "cool" nonetheless.
I will bleed out the remainder of the air tonight after the family goes to bed, and datalog again in the morning. This weekend I peaked at 80 degrees over ambient after 4 consecutive 0 to 80 runs. I was pulling timing all over the joint, but the s/c never shut off, so the new equipment was working... just not as well with air bubbles.
I will bleed out the remainder of the air tonight after the family goes to bed, and datalog again in the morning. This weekend I peaked at 80 degrees over ambient after 4 consecutive 0 to 80 runs. I was pulling timing all over the joint, but the s/c never shut off, so the new equipment was working... just not as well with air bubbles.
