Losing Coolant - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 02-24-2019, 05:19 PM Thread Starter
Join Date: Sep 2013
Posts: 40
Losing Coolant

2008 Cobalt, 341xxx km

losing coolant, but i'm not sure where

i've topped the coolant up exactly two times in owning this car for more than six years, both times in the last 12 months

i noticed it looked low the other day so i filled it back up to the full mark on the overflow (still had the coolant in the trunk), and now it's low again.

i did a fairly thorough once over at all the coolant hoses, the rad, and really anything and everything in the engine bay that looked remotely like a coolant line (have a valvecover leak, but that's not really overly concerning at the moment)

no obvious signs of leakage

pulled the plugs to see what they looked like; all good there, no signs of coolant there either

checked the dipstick/fill point on the valvecover; no signs of milkshake

any ideas? no change in mileage or performance, no white smoke, no sweet smell of antifreeze in the interior from the heater core or anything
theroadvirus is offline  
Sponsored Links
post #2 of 3 (permalink) Old 02-24-2019, 06:08 PM
Forum Regular
rooster4321's Avatar
Join Date: Oct 2015
Posts: 119
Remove the large plastic cover on the engine now from The fill tank is a rubber hose and then a steel tube across the front of the engine mine was rubbing on something and a small hole leaked that was not dripping but still leaking when hot

Sent from my KYOCERA-E6560 using Tapatalk
rooster4321 is offline  
post #3 of 3 (permalink) Old 02-27-2019, 06:13 PM
Forum Regular
Join Date: Mar 2017
Posts: 66
radiator,water pump,heater core or head gasket if you don't see any external hose leaks. pressure test it and let it sit overnight and or let it get hot and use a a head gasket checker

Last edited by TCSS07; 02-27-2019 at 07:24 PM.
TCSS07 is offline  
Sponsored Links
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
JW if Orange Coolant is the Stock Coolant NDcobalt Engine Mods 14 03-07-2012 05:45 PM
Losing the Lower Grill jimiballs Interior & Exterior Styling 23 07-30-2011 05:41 PM
Losing power...can anyone help? davkojr Problems and Service 16 01-06-2010 01:02 PM
Problem with Surging and Losing Power. black06SS Problems and Service 12 01-02-2010 11:04 AM
Losing my clearcoat?!? Quahogmafia Interior & Exterior Styling 8 05-13-2009 04:58 PM

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 On
Pingbacks are On
Refbacks are On

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