Coolant Empty within a Month - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

LinkBack Thread Tools Search this Thread
Old 11-15-2012
Romaswake's Avatar
Thread Starter
Join Date: Oct 2011
Location: DC
Posts: 130
Coolant Empty within a Month

Hey guys,
I was checking the fluids on the truck yesterday and noticed that my coolant reservoir is bone dry... I am very concerned because it was full to the brim about a month ago and the truck has sat for a good two weeks... so it has gone empty in only about 75-100 miles of driving. I also noticed when i was installing my skid that underneath the truck it was wet/oily by where the oil filter is. Maybe this has something to do with the coolant being low? What would you guys think it is? A pinhole in some tubing or something wrong with the radiator? Thanks for any input!

Attached Thumbnails
Coolant Empty within a Month-empty_coolant.jpg   Coolant Empty within a Month-img_0948.jpg  
Reply With Quote
Old 11-15-2012
wyldechild's Avatar
Join Date: Jun 2007
Location: Denver, Colorado
Posts: 1,952
Could be a number of things. First thing i'd check is the little hose that connects to the overfill container at the bottom. Mine has come loose a couple of times and i've lost all my coolant. I finally just used a zip tie or two to make it real tight.

Could be another leaky hose somewhere. Maybe the waterpump is bad. Maybe the radiator has a leak in it. Could also be the thermostat housing is leaking.
Reply With Quote
Old 11-15-2012
web's Avatar
web web is offline
Join Date: Oct 2011
Location: Columbia, MD
Posts: 210
Check your oil (via the dip stick) and look for any milky or bubbly film. If you have that, then you're in for it because the head gasket(s) is done.

As stated above, check the hose at the reservoir to ensure it's not leaking or cracked.

Do a pressure test of the radiator and see if the system holds pressure over night. If not, locate the leak.

Can't tell from the picture very well, but if it's leaking from the front of the block and back, it could also be the water pump. Inspect the gasket around the pump. Also, check the weep hole on the pump to see if it's clogged or leaking.
Reply With Quote
Old 11-15-2012
Romaswake's Avatar
Thread Starter
Join Date: Oct 2011
Location: DC
Posts: 130
Okay, ill test those things out in the morning to see if any of those could be the problem!
Reply With Quote
Old 11-16-2012
Scrambler82's Avatar
Old Guy Userů ltr
iTrader: (12)
Join Date: Jul 2009
Location: SoCal
Posts: 6,780
Check the walls of the reservoir for cracks too !

The hoses do go bad.

Also, when you say “filled to the brim” this isn’t coffee we are talking about , there is a fill line !

Anti-Freeze is oily feeling so i the coolant is leaking it could be just a mixture of anti-freeze and oil residues on the engine and that is all you are feeling.

What does your radiator look like on the outside, is there staining on it like leaking problems.
Just asking.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Truck of the month/year, member of the month/year... TheBearJeweler Ranger-Forums Office 34 01-16-2009 03:45 PM
clutch reservoir empty, help kyledm18 Drivetrain Tech 4 12-26-2008 06:04 PM
How to empty fuel pump ??? TommyC General Ford Ranger Discussion 3 03-28-2007 02:17 AM
Full tank of gas, yet guage and light says empty?! FMD General Ford Ranger Discussion 15 12-04-2006 12:50 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

All times are GMT -6. The time now is 03:27 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.