How do you burp the cooling system? - Dodge Durango Forum and Dodge Dakota Forums
Register Home Forum Extras Website Features Timeslips Calendar Auto Loans Search Today's Posts Mark Forums Read

4.7L/4.7L HO/4.7L Gen II Engines Questions regarding the 4.7L V8 engine

Dakota-Durango.com is the premier Dodge Dakota Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 06-23-2010, 01:47 AM
DakotaMike DakotaMike is offline
Registered User
 
Join Date: Nov 2007
Location: Clarksville, Indiana
Vehicle: 1991 Dakota / 2001 QC 4x4
Posts: 396
Reputation: 17 DakotaMike is just getting started
How do you burp the cooling system?

Hi guys,
I recently installed HO cams, new lifters, new water pump and thermostate on my 2001 QC 4.7L Dakota. I had no problems for the first week at all with the cooling system but now that the outside temp is mid 90's it's running a little hot (slightly over 12 O'clock on the gage). I think I might have some air trapped. Can someone enlighten me on the procedure to burp this system?
Thanks,
Mike
__________________
91 CC Carbed 414 R3
01 Quad Cab 4x4 4.7L
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 06-23-2010, 02:15 AM
caulk04 caulk04 is offline
.:.:.:.:.:.:.:.


 
Join Date: Jan 2006
Location: nowhereville
Vehicle: none
Posts: 10,417
Reputation: 239 caulk04 is a splendid one to beholdcaulk04 is a splendid one to beholdcaulk04 is a splendid one to behold
Pull cap, let truck run until warm. Fill it at the cap, then top off the resevoir as well.

Go beat the hell out of it for a bit (seemed to help me if not the truck). Check it after it's been cool for a while, it should pull what it needs from the resevoir.
Reply With Quote Quick reply to this message
  #3  
Old 06-23-2010, 02:38 AM
DakotaMike DakotaMike is offline
Registered User
 
Join Date: Nov 2007
Location: Clarksville, Indiana
Vehicle: 1991 Dakota / 2001 QC 4x4
Posts: 396
Reputation: 17 DakotaMike is just getting started
Thanks for the quick reply. When I refilled the coolant I simply topped it off drive around the block and let it cool and topped it off again and the overflow. I haven't checked it since. I though there was a special procedure in which you had to remove the bleeder plug and rev the engine or something? I will take the cap off tomorrow and let it run until the thermostate opens and make sure it's full.
Thanks again for the reply,
Mike
__________________
91 CC Carbed 414 R3
01 Quad Cab 4x4 4.7L
Reply With Quote Quick reply to this message
  #4  
Old 06-23-2010, 03:04 AM
djdanrt's Avatar
djdanrt djdanrt is offline
Registered User
 
Join Date: Jan 2010
Location: Plano, TX
Vehicle: 2x 2000 Dakota RC 4.7
Posts: 754
Reputation: 22 djdanrt is just getting started
Quote:
Originally Posted by DakotaMike View Post
Hi guys,
I recently installed HO cams, new lifters, new water pump and thermostate on my 2001 QC 4.7L Dakota. I had no problems for the first week at all with the cooling system but now that the outside temp is mid 90's it's running a little hot (slightly over 12 O'clock on the gage). I think I might have some air trapped. Can someone enlighten me on the procedure to burp this system?
Thanks,
Mike
I think the proper way involves the bleeder screw.
Reply With Quote Quick reply to this message
  #5  
Old 06-23-2010, 03:23 AM
GWhaley GWhaley is offline
Registered User
 
Join Date: Jan 2006
Location: Ontario Canada
Vehicle: 2001 Dakota Q.C.
Posts: 2,371
Reputation: 86 GWhaley is a jewel in the rough
According to FSM - this is how I did it and haven't had an issue.

STANDARD PROCEDURE - REFILLING
COOLING SYSTEM 4.7L ENGINE
(1) Tighten the radiator draincock and the cylinder
block drain plug(s) (if removed).
CAUTION: Failure to purge air from the cooling system
can result in an overheating condition and
severe engine damage.
(2) Remove the cooling system bleed plug from the
radiator upper hose inlet housing. (Fig. 11)Fill system
using a 50/50 mixture of ethylene-glycol antifreeze
and low mineral content water, until coolant begains
coming out of the cooling system bleed hole. Install
the cooling system bleed plug. Fill radiator to top and
install radiator cap. Add sufficient coolant to the
reserve/overflow tank to raise level to FULL mark.
(3) With heater control unit in the HEAT position,
operate engine with radiator cap in place.
(4) After engine has reached normal operating
temperature, shut engine off and allow it to cool.

When engine is cooling down, coolant will be drawn
into the radiator from the reserve/overflow tank.
(5) Add coolant to reserve/overflow tank as necessary.
Only add coolant to the reserve/overflow
tank when the engine is cold. Coolant level in a
warm engine will be higher due to thermal
expansion.
Reply With Quote Quick reply to this message
  #6  
Old 06-23-2010, 10:51 PM
caulk04 caulk04 is offline
.:.:.:.:.:.:.:.


 
Join Date: Jan 2006
Location: nowhereville
Vehicle: none
Posts: 10,417
Reputation: 239 caulk04 is a splendid one to beholdcaulk04 is a splendid one to beholdcaulk04 is a splendid one to behold
Quote:
Originally Posted by djdanrt View Post
I think the proper way involves the bleeder screw.
It can't hurt, but my method worked for me and I felt a whole lot better after my little joy ride.
Reply With Quote Quick reply to this message
  #7  
Old 06-23-2010, 10:58 PM
jmaack727's Avatar
jmaack727 jmaack727 is offline
"][" {[]} {[]} ][_ 
 
Join Date: Jan 2006
Location: Alabamalama
Vehicle: 2 of em.
Posts: 17,326
Reputation: 394 jmaack727 is a splendid one to beholdjmaack727 is a splendid one to beholdjmaack727 is a splendid one to beholdjmaack727 is a splendid one to behold
Where is the bleed hole on a 3.9 5.2 5.9 engine?

I just removed my cap brought it up to temp, filled it up as it warmed then topped off reservoir. Then just put the cap back on.
Reply With Quote Quick reply to this message
  #8  
Old 06-24-2010, 12:38 AM
GWhaley GWhaley is offline
Registered User
 
Join Date: Jan 2006
Location: Ontario Canada
Vehicle: 2001 Dakota Q.C.
Posts: 2,371
Reputation: 86 GWhaley is a jewel in the rough
Quote:
Originally Posted by jmaack727 View Post
Where is the bleed hole on a 3.9 5.2 5.9 engine?

I just removed my cap brought it up to temp, filled it up as it warmed then topped off reservoir. Then just put the cap back on.

I think it is only the 4.7 that has the bleeder screw
Reply With Quote Quick reply to this message
  #9  
Old 06-24-2010, 12:39 AM
jmaack727's Avatar
jmaack727 jmaack727 is offline
"][" {[]} {[]} ][_ 
 
Join Date: Jan 2006
Location: Alabamalama
Vehicle: 2 of em.
Posts: 17,326
Reputation: 394 jmaack727 is a splendid one to beholdjmaack727 is a splendid one to beholdjmaack727 is a splendid one to beholdjmaack727 is a splendid one to behold
Quote:
Originally Posted by GWhaley View Post
I think it is only the 4.7 that has the bleeder screw
I dont have one on mine I know that.
Reply With Quote Quick reply to this message
  #10  
Old 06-24-2010, 01:02 AM
caulk04 caulk04 is offline
.:.:.:.:.:.:.:.


 
Join Date: Jan 2006
Location: nowhereville
Vehicle: none
Posts: 10,417
Reputation: 239 caulk04 is a splendid one to beholdcaulk04 is a splendid one to beholdcaulk04 is a splendid one to behold
Quote:
Originally Posted by jmaack727 View Post
I dont have one on mine I know that.
On your what? pushrod motor or 4.7 (you only have the R/T, right?)?

I'm pretty sure the pushrod motors never had a bleeder, just the 4.7 because of the location of the water outlet. It's high and pretty much horizontal from the timing cover (where the bleeder is) to the cap.
Reply With Quote Quick reply to this message
  #11  
Old 06-24-2010, 01:05 AM
jmaack727's Avatar
jmaack727 jmaack727 is offline
"][" {[]} {[]} ][_ 
 
Join Date: Jan 2006
Location: Alabamalama
Vehicle: 2 of em.
Posts: 17,326
Reputation: 394 jmaack727 is a splendid one to beholdjmaack727 is a splendid one to beholdjmaack727 is a splendid one to beholdjmaack727 is a splendid one to behold
Quote:
Originally Posted by caulk04 View Post
On your what? pushrod motor or 4.7 (you only have the R/T, right?)?

I'm pretty sure the pushrod motors never had a bleeder, just the 4.7 because of the location of the water outlet. It's high and pretty much horizontal from the timing cover (where the bleeder is) to the cap.
Bah NM It was too early when I first replied this morning, Well when I woke up.... I was thinking it was for his 390..
Reply With Quote Quick reply to this message
  #12  
Old 06-29-2010, 02:48 AM
djr8505's Avatar
djr8505 djr8505 is offline
Backwoods Country Bumpkin
 
Join Date: Aug 2008
Location: Rochester NY
Vehicle: 1998 Dodge Dakota SLT 4X4
Posts: 57
Reputation: 16 djr8505 is just getting started
Send a message via AIM to djr8505
With my 5.2 I burped the coolant system by filling the radiator with 50/50 and then squeezing the upper and lower coolant hoses until there were no bubbles coming out of the top of the radiator. Then I topped of the radiator before sealing everything up. Works great, especially with the new 180 thermo.
__________________
Ellipsis - The short pause between rational thought and well ... Nothing!

S B C
Reply With Quote Quick reply to this message
  #13  
Old 06-29-2010, 07:22 AM
krs's Avatar
krs krs is offline
Registered User
 
Join Date: Oct 2007
Location: USA
Vehicle: Dodge Ram
Posts: 370
Reputation: 13 krs is just getting started
Quote:
Originally Posted by djr8505 View Post
With my 5.2 I burped the coolant system by filling the radiator with 50/50 and then squeezing the upper and lower coolant hoses until there were no bubbles coming out of the top of the radiator. Then I topped of the radiator before sealing everything up. Works great, especially with the new 180 thermo.
This is what I do with my 4.7 as well
__________________
2002 Ram 4.7L 2wd

Performance: 4.56 Gears, H/O Cams, 2008 Intake Manifold, Ported 70mm TB, 4" Custom MIT Tube, Gibson SS Headers, Superchips 3865, Custom Y-Pipe With Magnaflow High Flow Cat and Muffler (12580) SI/DO Turn Down After Axel, Jeep Grand Cherokee TCM
Reply With Quote Quick reply to this message
  #14  
Old 06-30-2010, 01:45 AM
DakotaMike DakotaMike is offline
Registered User
 
Join Date: Nov 2007
Location: Clarksville, Indiana
Vehicle: 1991 Dakota / 2001 QC 4x4
Posts: 396
Reputation: 17 DakotaMike is just getting started
Quote:
Originally Posted by GWhaley View Post
According to FSM - this is how I did it and haven't had an issue.

STANDARD PROCEDURE - REFILLING
COOLING SYSTEM 4.7L ENGINE
(1) Tighten the radiator draincock and the cylinder
block drain plug(s) (if removed).
CAUTION: Failure to purge air from the cooling system
can result in an overheating condition and
severe engine damage.
(2) Remove the cooling system bleed plug from the
radiator upper hose inlet housing. (Fig. 11)Fill system
using a 50/50 mixture of ethylene-glycol antifreeze
and low mineral content water, until coolant begains
coming out of the cooling system bleed hole. Install
the cooling system bleed plug. Fill radiator to top and
install radiator cap. Add sufficient coolant to the
reserve/overflow tank to raise level to FULL mark.
(3) With heater control unit in the HEAT position,
operate engine with radiator cap in place.
(4) After engine has reached normal operating
temperature, shut engine off and allow it to cool.

When engine is cooling down, coolant will be drawn
into the radiator from the reserve/overflow tank.
(5) Add coolant to reserve/overflow tank as necessary.
Only add coolant to the reserve/overflow
tank when the engine is cold. Coolant level in a
warm engine will be higher due to thermal
expansion.
Thanks for the info GWhaley! I drained the cooling system, flushed out the entire system with the good old garden hose, refilled with Peak lifetime coolant and distilled water following the instructions above. No problems at all.. Towed my 91 on my 18 foot trailer 30 miles to the chassis shop to have the some bars added to the cage (so it will certify) with the a/c on and the gauge never made it to half way, just like it used to be. I feel safe saying it was air in the system.

Thanks again for the info!
Mike
__________________
91 CC Carbed 414 R3
01 Quad Cab 4x4 4.7L
Reply With Quote Quick reply to this message
  #15  
Old 06-30-2010, 02:59 AM
gocartone's Avatar
gocartone gocartone is offline
Registered User
 
Join Date: Dec 2009
Location: Wisconsin
Vehicle: 2001 Dakota 4x4 R/C
Posts: 2,755
Reputation: 54 gocartone has a spectacular aura about
Correct way to do it is to leave the heat on full blast, hold the RPM's at about 3k and keep adding coolant til it stops going down. You need to hold the throttle til it gets up to temp and the t-stat opens up. DON'T drive it as there is no reason, and you need to keep an eye on the coolant level which is kind of hard when you are going down the road haha. IDK if there is a bleeder screw on the 4.7 or not I didn't see anything when I did mine and it worked just fine.
__________________
2008 Corvette 485whp
2001 RC 4.7 5-Speed 4x4
2006 Yamaha FZ6
2004 Honda 450R
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Dodge Durango Forum and Dodge Dakota Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 10:24 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Copyright 2001-2010 Dakota-Durango Archive