Recent Topics
Flight Tracker
by Eddie
05/31/16 02:33 PM
Art and ugly are separated by a fine line
by HTSS_TR
05/31/16 02:27 PM
2013 Ram 1500 Vibration Issue
by 757guy
05/31/16 11:21 AM
Speed & Temperature ratings vs cold PSI
by badtlc
05/31/16 10:52 AM
Worthy of a news story??
by andrewg
05/31/16 10:13 AM
Gorilla Shooting...decaying moral values?
by Smokescreen
05/31/16 09:53 AM
Oil Change Frequency - 04 Neon
by racer12306
05/31/16 09:15 AM
Great PDF on Mazda Skyactiv
by buster
05/31/16 08:43 AM
2014 Chevy Silverado 1500 CC. 5.3L 4WD Oil
by AirgunSavant
05/31/16 08:13 AM
0W-40 for 223k mile 95 Mercedes E320?
by gregoron
05/31/16 06:22 AM
I hate surprises
by Excel
05/31/16 06:10 AM
Wix coolant filter change and cut open
by A310
05/31/16 03:45 AM
Newest Members
ph9, Kurt34556, Skullzaflare, Jakes_Lawn, Aarrghhh
58031 Registered Users
Who's Online
87 registered (aquariuscsm, AirgunSavant, 2015_PSD, 901Memphis, Atesz792, Astro14, 12 invisible), 2013 Guests and 319 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
58031 Members
66 Forums
249629 Topics
4087234 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3392205 - 06/08/14 01:51 PM Radiator pressure
justinf89 Offline


Registered: 07/11/10
Posts: 534
Loc: Hampton, VA
I've been doing maintenance on a buddys '07 explorer with the v6. I went to check the radiator and it had a lot of pressure after loosening the cap. This was after it sat overnight. I changed to coolant so I've been trying to purge the air, but it won't draw from the expansion tank.

Sound like a new cap is in order? Why wouldn't the pressure equalize overnight?
_________________________
97 Explorer 4.0L SOHC - 155k - ML 5w-30/PL30001

04 Safari 4.3L - 235k - ML 5w-30/L24011

05 Silverado 6.6L DMX - 135k - Ams AME/EAO52

Top
#3392212 - 06/08/14 01:56 PM Re: Radiator pressure [Re: justinf89]
OneEyeJack Offline


Registered: 09/14/10
Posts: 5207
Loc: S California
Compare it with one of your cars.

Top
#3392236 - 06/08/14 02:14 PM Re: Radiator pressure [Re: justinf89]
Chris142 Offline


Registered: 06/05/03
Posts: 13819
Loc: apple valley, ca
Is the radiator full?
_________________________
02 Wrangler super-s 10w30
87 F250 delo 15w40
04 Tahoe super-s 5w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric delo 5w40

Top
#3392247 - 06/08/14 02:32 PM Re: Radiator pressure [Re: justinf89]
Warstud Offline


Registered: 09/02/05
Posts: 3950
Loc: MIchigan
Make sure the air is purged from the cooling system before you suspect somethings wrong with the Rad Cap. Try jacking up the front end and running it with the cap off.

FYI: On a cold motor the Rad should be full and the expansion tank should be at the Cold mark. When the motor gets up to temperature the expansion tank should read Hot. When you shut the motor off the Rad should draw coolant from the expansion tank
until it fills up and the expansion tank should read Cold again.

Top
#3393461 - 06/09/14 09:02 PM Re: Radiator pressure [Re: Warstud]
asand1 Offline


Registered: 12/16/12
Posts: 1459
Loc: Oregon coast
Originally Posted By: Warstud
: On a cold motor the Rad should be full and the expansion tank should be at the Cold mark. When the motor gets up to temperature the expansion tank should read Hot. When you shut the motor off the Rad should draw coolant from the expansion tank
until it fills up and the expansion tank should read Cold again.


This will only happen when the cap is not plugged
_________________________
Nissan/Infinity/Mazda Manuals
1996 Maxima 310K
1998 F250ld

Top