V6 Coolant Flush? - Hyundai Forums : Hyundai Forum
 
LinkBack Thread Tools
#1 Old 03-27-2011, 09:21 PM
Banned
 
Join Date: Mar 2011
Location: Marlton, NJ
2002 Sonata LX V6
Posts: 248
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chloe2002
(Thread Starter)
the search feature is down, but i'm looking for a write-up on coolant flush/drain on a 2002-2005 2.7 v6. normally it's drain raditor, pour in flush, run it, drain again, fill with water, drain again, then fill with coolant, but i'm not sure about drain plug positions and whether you have to remove the thermostat on these models. thanks guys!
Chloe2002 is offline  
Sponsored Links
Advertisement
 
#2 Old 03-27-2011, 09:26 PM
Senior Member
 
sbr711's Avatar
 
Join Date: Apr 2010
Location: hiding from those who might be looking for me
I dont own Hyundai car, I drive everybody else Hyundai during day
Posts: 8,971
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
sbr711 is an unknown quantity at this point
Dont waste your time.. drain the radiator, and there is an accesible block drain plug on the firewall side of block.. this will get the better part of the coolant out.. then refill with new mixed coolant

<--- please fill in the 'location' and 'what you drive' boxes on your personal profile page.
This information makes it much easier for other members to answer/comment on your posts.
sbr711 is offline  
#3 Old 03-29-2011, 04:15 PM
Banned
 
Join Date: Mar 2011
Location: Marlton, NJ
2002 Sonata LX V6
Posts: 248
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chloe2002
(Thread Starter)
from everything i've read, you only get a few gallons (if that) from the radiator petcock. apparently the 2.7 has two block drain plugs, one for each bank, but on certain models it's really hard to get to b/c the starter is in the way etc. any idea where a picture might be of the underside of the 2.7, or the location of those drain plugs? google is NO help whatsoever lol
Chloe2002 is offline  
#4 Old 03-29-2011, 08:10 PM
Senior Member
 
sbr711's Avatar
 
Join Date: Apr 2010
Location: hiding from those who might be looking for me
I dont own Hyundai car, I drive everybody else Hyundai during day
Posts: 8,971
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
sbr711 is an unknown quantity at this point
Block drain plug for bulkhead side of block is out in open, has a 14mm hex head on it.. note they is usually pretty tight in the block from never being used as a source for drianing more coolant.. most will come out, use an impact swivel socket, and lonlg extension, and a 1/2 drive breaker bar..

Plug on radiator side is behind starter, right besdie the crank position sensor, not a lot of room to work that plug if it is stuck in the block. L dont mess with it.. we dont get a lot for coolant change.

Before install of drain plug, use some PERMATEX pipe thread sealer in squeeze bottle,, looks like toothpaste... I have tube of the 592 as it it called out for use on a bunch of fastenetrs on my YAMAHA PWC.. Put the plug in the block and snug it up,, dont go majorly torqueing it, it'll be major PIA to remove next time around (it is a tapered pipe plug).

<--- please fill in the 'location' and 'what you drive' boxes on your personal profile page.
This information makes it much easier for other members to answer/comment on your posts.
sbr711 is offline  
#5 Old 03-29-2011, 08:36 PM
Banned
 
Join Date: Mar 2011
Location: Marlton, NJ
2002 Sonata LX V6
Posts: 248
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chloe2002
(Thread Starter)
exactly the response i was hoping for! thanks!

so the plug by the crank sensor, leave it be? i assume the majority would come out with the radiator plug and the block plug. i'm not sure i have that 14mm hex, i'll have to buy it the day before. any idea if a product like Prestone Super Flush is worth it? the car has 75k on it, and was last changed at 25k (when i bought the car). it would be easy to drain and refill, but the flush procedure would be worth it if there's noticable rust or something i guess?

appreciate the help guys
Chloe2002 is offline  
#6 Old 03-30-2011, 04:01 AM
Senior Member
 
sbr711's Avatar
 
Join Date: Apr 2010
Location: hiding from those who might be looking for me
I dont own Hyundai car, I drive everybody else Hyundai during day
Posts: 8,971
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
sbr711 is an unknown quantity at this point
Dump it, and refill it.

<--- please fill in the 'location' and 'what you drive' boxes on your personal profile page.
This information makes it much easier for other members to answer/comment on your posts.
sbr711 is offline  
#7 Old 03-31-2011, 08:26 PM
Banned
 
Join Date: Mar 2011
Location: Marlton, NJ
2002 Sonata LX V6
Posts: 248
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chloe2002
(Thread Starter)
weird how the owner's manual just says to drain the rad and then refill. they don't even mention to two block plugs...
Chloe2002 is offline  
#8 Old 04-04-2011, 04:43 PM
Banned
 
Join Date: Mar 2011
Location: Marlton, NJ
2002 Sonata LX V6
Posts: 248
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chloe2002
(Thread Starter)
okay so i drained the rad, ran running water through it, and refilled. car running as normal, except now i have a pretty nice coolant leak from SOMEWHERE that's spraying all over when the fans kick on (hit 80 for the first time today). i removed the plastic shroud underneath the radiator, and the drain plug is snug, except it looks like the bushings on either side are soaked with coolant. since i don't know where it started from,... wtf happened??? any ideas??

Chloe2002 is offline  
#9 Old 04-09-2011, 10:35 AM
Banned
 
Join Date: Mar 2011
Location: Marlton, NJ
2002 Sonata LX V6
Posts: 248
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Chloe2002
(Thread Starter)
update: when i drained the old coolant, and filled it up with water to run it and flush all the crap out, i forgot to turn the heater on so a huge air pocket formed and destroyed my radiator. to much pressure i guess. new radiator, two new hoses, a thermostat and a proper flush and fill at the shop = serious $$$. lesson learned.
Chloe2002 is offline  
#10 Old 07-17-2014, 02:32 AM
Junior Member
 
Join Date: Jul 2014
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jpweig is an unknown quantity at this point
that is a really interesting thought. with no air, the cap is what 14-16 lbs. but if you have a lot of air pressurized by water over the boiling point it destroys things before the cap can vent it ? any physics majors out there ?
jpweig is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hyundai Forums : Hyundai Forum 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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome