Coolant cap slightly hissing and loss of coolant - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 01-18-2013, 11:40 AM   #1
tazman2
Focus Jr. Enthusiast
 
Join Date: Aug 2011
Fan#: 88684
Location: Hartford, CT
What I Drive: 2000 Ford Focus ZX3

Posts: 39
FF Reputation: 1 tazman2 Good Standing Member
Buy-Sell-Trade Rating: (0)
Coolant cap slightly hissing and loss of coolant

So I checked my coolant the other day after my PVC/air box vent clogging ordeal (topic on here!) since I was pushing out oil I figured I'd check the coolant as well it was a good bit low in the tank added maybe 1/5th of a gallon and its still not where it should be but when hot almost full so its close! Anyways, I noticed a hissing from the cap. Is the cap bad and thus my coolant is evaporating or is the hissing normal for these cars!?


tazman2 is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-18-2013, 11:42 AM   #2
JayDeZ
Focus Enthusiast
 
Join Date: Apr 2012
Fan#: 97919
Location: New Britain, CT
What I Drive: 2014 Honda Accord Sport 6-sp manual

Posts: 313
Points 1,466, Level 21
Points: 1,466, Level: 21 Points: 1,466, Level: 21 Points: 1,466, Level: 21
Level Up 66% Completed
Level up: 66% Level up: 66% Level up: 66%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 3 JayDeZ Good Standing Member
Buy-Sell-Trade Rating: (0)
cap shouldnt hiss. Get a new cap. In the past i found all the aftermarket ones at part stores suck. go to the dealer and get an OEM cap. They arent too expensive.
__________________
Jay
2014 Honda Accord Sport
JayDeZ is offline  
    Reply With Quote Quick reply to this message
Old 01-18-2013, 01:35 PM   #3
focus202
Focus Enthusiast
 
Join Date: Dec 2011
Fan#: 93264
Location: Las Vegas, NV
What I Drive: 2001 Silver ZX3

Posts: 89
Points 312, Level 6
Points: 312, Level: 6 Points: 312, Level: 6 Points: 312, Level: 6
Level Up 24% Completed
Level up: 24% Level up: 24% Level up: 24%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 1 focus202 Good Standing Member
Buy-Sell-Trade Rating: (0)
tazman2 I have a full coolant reservior with the cap, i can sell it to you. Let me know if you need id. Pics upon request.
focus202 is online now  
    Reply With Quote Quick reply to this message
Old 01-18-2013, 01:40 PM   #4
my_beautious_ZX3
Focus Addict
 
Join Date: Feb 2006
Fan#: 32386
Location: Chicago, IL
What I Drive: 2002 charcoal XZ3

Posts: 746
Points 1,342, Level 20
Points: 1,342, Level: 20 Points: 1,342, Level: 20 Points: 1,342, Level: 20
Level Up 43% Completed
Level up: 43% Level up: 43% Level up: 43%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 5 my_beautious_ZX3 Good Standing Member
Buy-Sell-Trade Rating: (0)
I once let a shop flush my antifreeze (i know, i know). Next day, coolant hissed and seeped out of the reservoir cap, as if it was overheating. I bought a new cap; did the same thing. I called the dealer back and the tech said that sometimes happens when the reservoir cap is over-torqued - the plastic threads aren't strong enough. I backed-off the cap about an 1/8 of a turn and it was fine...for about a year, when another tech removed & retightened it during the free "courtesy check" that tire shops like to do (because they're not making enuf money off you already??). After that, I used a sharpie to make an alignment mark on the cap & resevoir.
__________________
"I'm jealous of girls because they get to wear dresses." (Todd Flanders)
my_beautious_ZX3 is offline  
    Reply With Quote Quick reply to this message
Old 01-18-2013, 01:59 PM   #5
tazman2
Focus Jr. Enthusiast
 
Join Date: Aug 2011
Fan#: 88684
Location: Hartford, CT
What I Drive: 2000 Ford Focus ZX3

Posts: 39
FF Reputation: 1 tazman2 Good Standing Member
Buy-Sell-Trade Rating: (0)
Over Torqued huh!? Hmm that is a weird one but very possible! And I noticed they sell the reservoir and cap at a few places do they fail or something often!? lol
tazman2 is offline  
    Reply With Quote Quick reply to this message
Old 01-18-2013, 04:14 PM   #6
xxMichaelAnthony
Focus Fanatic
 
xxMichaelAnthony's Avatar
 
Join Date: Aug 2008
Fan#: 58459
Location: Orange County, CA, CA
What I Drive: 2001 CD Silver ZX3

Posts: 2,565
Points 15,496, Level 80
Points: 15,496, Level: 80 Points: 15,496, Level: 80 Points: 15,496, Level: 80
Level Up 30% Completed
Level up: 30% Level up: 30% Level up: 30%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 20 xxMichaelAnthony Great Standing Member
Buy-Sell-Trade Rating: (3)
Do not get some random parts store cap. Get it from Ford. Should only be about $15. Make sure you get the right one!!

This is the one that should be on you car.


If you have replaced the coolant tank with the revised one you should have this one.


Old cap, new tank or old tank, new cap is a no go.
__________________
http://effyeahfordcars.tumblr.com
[HOONIGAN]
iTroll
xxMichaelAnthony is offline  
    Reply With Quote Quick reply to this message
Old 01-18-2013, 06:40 PM   #7
tazman2
Focus Jr. Enthusiast
 
Join Date: Aug 2011
Fan#: 88684
Location: Hartford, CT
What I Drive: 2000 Ford Focus ZX3

Posts: 39
FF Reputation: 1 tazman2 Good Standing Member
Buy-Sell-Trade Rating: (0)
Yep I have the top one the original one! Have a part number by chance!?
tazman2 is offline  
    Reply With Quote Quick reply to this message
Old 01-18-2013, 08:58 PM   #8
BC_ZX3
DTC P0606
 
BC_ZX3's Avatar
 
Join Date: Jul 2007
Fan#: 48751
Location: Vancouver, BC, Canada
What I Drive: 2001 Red ZX3 Turbo

Posts: 2,941
Points 2,059, Level 27
Points: 2,059, Level: 27 Points: 2,059, Level: 27 Points: 2,059, Level: 27
Level Up 40% Completed
Level up: 40% Level up: 40% Level up: 40%
Forum Activity 2%
Activity: 2% Activity: 2% Activity: 2%
FF Reputation: 88 BC_ZX3 Excellent Standing Member
Buy-Sell-Trade Rating: (3)
Ford part # F5RZ 8100 A
Motorcraft RS92
BC_ZX3 is offline  
    Reply With Quote Quick reply to this message
Old 01-19-2013, 12:24 AM   #9
amc49
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 5,538
Points 3,196, Level 34
Points: 3,196, Level: 34 Points: 3,196, Level: 34 Points: 3,196, Level: 34
Level Up 98% Completed
Level up: 98% Level up: 98% Level up: 98%
Forum Activity 53%
Activity: 53% Activity: 53% Activity: 53%
FF Reputation: 25 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
Either under or over torqued can do it. When tank gets old the plastic threads can fray to make for added torque needed to pull up the gasket tight. On both mine they hiss until I ever so slightly torque more than I can by hand with a big pair of channel locks to make it seal and stop. I'm talking a very small amount, easy to overdo it and strip threads.

Both mine been like that forever.

The cap MUST seal or coolant boils..............
amc49 is offline  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS 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:
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

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 -5. The time now is 11:19 AM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat