Coolant bleed question (will delete after a simple yes or no answer)
03-14-2011, 05:43 PM
#1
MBWorld Fanatic!
Thread Starter
Coolant bleed question (will delete after a simple yes or no answer)
Is the boxed in nipple the same for bleeding air out after IC pump change? (Picture courtesy of Kompressed55)
03-14-2011, 05:45 PM
#3
Senior Member
Join Date: May 2010
Location: Collierville, TN
Posts: 293
Likes: 0
Received 0 Likes
on
0 Posts
E55
FWIW, I straight wired my pump to a remote battery charger to confirm the pump was working and also to bleed the system without having the motor running for 20+ minutes.
Todd
Todd
03-14-2011, 05:46 PM
#4
MBWorld Fanatic!
Thread Starter
thats a very small hole, i heard it was a 3/4 inch nipple. what size hose did you use, and you just took off the cap to the main coolant reservoir and stuck it (the hose 
) in there?
) in there?
03-14-2011, 06:10 PM
#5
Member
Join Date: Mar 2007
Location: PHX & Huntsville
Posts: 214
Likes: 0
Received 1 Like
on
1 Post
2010 Silverado, 03 H2, 66 Nova SS, 03 E55
3/4 inch is the hoses going into and out of the IC Pump. STD heater hose I.D.
For the bleed nipple I use a piece of clear fuel line, with the IC pump wired to a battery. One end on the nipple, the other end into the reso.
For the bleed nipple I use a piece of clear fuel line, with the IC pump wired to a battery. One end on the nipple, the other end into the reso.
Trending Topics
03-14-2011, 06:23 PM
#8
Senior Member
Join Date: May 2010
Location: Collierville, TN
Posts: 293
Likes: 0
Received 0 Likes
on
0 Posts
E55
5/16" ID clear tubing is what I used. It fit on the nipple nice and tight. I bought mine from Home Depot for around $5 for 10' or so. Just make sure it is clear so you can tell when there are absolutely no bubbles remaining in the system.
IMPORTANT NOTE.
03-14-2011, 10:49 PM
#11
MBWorld Fanatic!
03-14-2011, 10:59 PM
#12
MBWorld Fanatic!
Join Date: Nov 2009
Posts: 1,006
Likes: 0
Received 0 Likes
on
0 Posts
e55
Then started the car with the cap off, with the heat on full blast until the bubbles stopped, then put the cap back on.
Worked like a charm
03-14-2011, 11:14 PM
#13
MBWorld Fanatic!
Thread Starter
Well, my IC pump will be shipped in tomorrow and I'm installing it Wednesday. Also, for the newbs, im going to try to take at LEAST 15 pics and do a DIY write up from lifting the car on a 2 post lift to opening the coolant reservoir. lol it may be a bit extreme, But when i was looking about 4 months ago, there were no detailed DIYs on the IC pump, so i figured what the hell, you only live once right?
05-25-2011, 12:19 AM
#14
MBWorld Fanatic!
Having some problems bleeding...
Coolant tank cap off, pump running, engine started, coolant line connected from bleed point to tank... did for 10-15mins no bubbles... also the fluid doesnt come out unless I move the pipe lower than the actually bleed point and into a container.
Supercharger shuts off after 4-5 hard pulls, but as soon as I turn the car off than on, I am good for more pulls... tells me there is still air in the system? Am I doing the procedure right?
Coolant tank cap off, pump running, engine started, coolant line connected from bleed point to tank... did for 10-15mins no bubbles... also the fluid doesnt come out unless I move the pipe lower than the actually bleed point and into a container.
Supercharger shuts off after 4-5 hard pulls, but as soon as I turn the car off than on, I am good for more pulls... tells me there is still air in the system? Am I doing the procedure right?
05-25-2011, 12:57 AM
#15
MBWorld Fanatic!
Join Date: Jun 2010
Location: Puerto Rico
Posts: 4,173
Likes: 0
Received 5 Likes
on
4 Posts
2005 E55 AMG
I just got the line I attached to the bleed nipple and threw it to the floor and kept adding water till I felt convinced that all the air came out ( 1-2 minutes ).
05-25-2011, 01:20 AM
#17
Super Moderator
^ Sound advice.
Also, restricting the downstream (return) hose aids in purging the intercooler’s naturally-occurring airlock.
C32 shown
Also, restricting the downstream (return) hose aids in purging the intercooler’s naturally-occurring airlock.
C32 shown
05-25-2011, 02:32 AM
#18
MBWorld Fanatic!
05-25-2011, 03:01 AM
#19
MBWorld Fanatic!
If I put the hose from the bleed point to the reservoir nothing comes out, as soon as I put the hose on the floor, it starts to flow! should I just let it bleed into a coolant jug on the floor and pour that back into the res? orrrrrrr it should be flowing from the hose straight to the res?
Last edited by tbal; 05-25-2011 at 04:16 AM.
05-25-2011, 07:01 AM
#20
Member
I cut the clear hose down to only as much as it takes to get to the res. Seems to build pressure quicker through the tube and I also used 2 clamps on that hose shown. Try that out.
05-25-2011, 07:27 AM
#21
Super Member
@tbal you want to wire you IC pump to run with the motor off. Or turn the IC pump on through star or SDS with the bleed tube going in to the radiator overflow or fill point. Unless you have a split system then you run the clear tubing from the metal bleed point to your fill point for split system.
05-25-2011, 07:50 AM
#22
MBWorld Fanatic!
So motor doesn't need to be on to do the bleed?
If I put the hose from the bleed point to the reservoir nothing comes out, as soon as I put the hose on the floor, it starts to flow! should I just let it bleed into a coolant jug on the floor and pour that back into the res? orrrrrrr it should be flowing from the hose straight to the res?
If I put the hose from the bleed point to the reservoir nothing comes out, as soon as I put the hose on the floor, it starts to flow! should I just let it bleed into a coolant jug on the floor and pour that back into the res? orrrrrrr it should be flowing from the hose straight to the res?
Oh, and don't clamp it all the way shut, just enough to get the coolant flowing freely through your bleed line.
