Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

VS s2 slowly losing coolant

immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
17,403
Reaction score
6,978
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX s2 Calais S/C
My 97 V6 berlina is slowly loosing coolant, i fill the overflow tank every couple of months etc. i've tightened all my hose connections etc, their isn't any wet spots inside the car either so i don't think it's a leaking heater core. i've checked the plugs afew times and theres no sign of contamination there, got a compression test when i bought it and alls good there, checked and changed the oil and theres no sign of any coolant in there either:bang: it's got me stumped and it's only got 112,000km on the clock. my local wrecker (commodore specialists only)reckons it's a common problem for the ecotec engine to crack heads and slowly use coolant but i find this hard to believe

any ideas
 

Tree cutter

Tree cutter
Joined
Apr 15, 2006
Messages
1,020
Reaction score
8
Points
38
Location
Mt Gambier SA
Members Ride
VX Calais SuperchargedV6
Check your overflow tank to see if it is cracked. It could be slowly leaking out of there.
 

immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
17,403
Reaction score
6,978
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX s2 Calais S/C
i'll check that but i don't think thats the prob as i originally noticed there was non in the overflow tank and when i checked the radiator it also needed some coolant after doing a coolant system flush etc. ever since i've always made sure there was coolant in the overflow tank to make sure theres no air getting into the system. imade sure when i filled it to warm the car up and let the thermostat open, keeping the radiator topped up whilst having the bleed screw open and waited until i only got coolant out of it before closing it and the radiator.

think i might try bleeding the system again??
 

DeiCide

DeiCide
Joined
Jan 1, 2006
Messages
237
Reaction score
1
Points
18
Location
Adelaide
Members Ride
VT S2 L67
My cars been losing coolant, mainly after driving. I turn engine off and slow driping of coolant underneath car near the back of the engine. I have to top it up every 4 or so weeks. so you might wanna check if yours is doing the same.
 

maginoodle

Active Member
Joined
Apr 14, 2006
Messages
816
Reaction score
30
Points
28
Members Ride
vy series2 ss crewman
mine slowly leaks from the hole in the water pump. i only top up about every 2500 kays. it was hard to track down. you could get your local radiater place to pressure test your cooling system for you
 

quiksilver1

New Member
Joined
Apr 16, 2006
Messages
134
Reaction score
0
Points
0
Members Ride
vu ss
if i fill my overflow bottle up my car pisses it out at the top of the radiator,it drops down about 1/2 inch from radiator cap and then stays at this level,i have no over heating problems but effectivley my car doesnt use the overflow bottle as is just sucks it out.has anyone else had this problem?? cheers
 

Struma

Urge Surfer
Joined
Jan 13, 2006
Messages
32
Reaction score
0
Points
0
Age
51
Members Ride
VS S2 Executive Ute
Overflowing at radiator cap

Mine does the same thing - forget about filling it at the overflow, as all that happens is it blows out from under the cap - all over the engine bay.

But when I check the level under the cap the radiator is (almost) always full.
Then as soon as I try to lift the level in the overflow tank it will empty out of the cap again once it has been for a run.

Doesn't overheat nor does there appear to be any head/gasket problems...
 

immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
17,403
Reaction score
6,978
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX s2 Calais S/C
mine doesn't appear to overheat so i'm not to concerned at the mo, just been tryingto track this one down for about a year now with no success
 

sixshooter

New Member
Joined
Jul 22, 2005
Messages
2,061
Reaction score
28
Points
0
Members Ride
2x VS
quiksilver1 said:
if i fill my overflow bottle up my car ****es it out at the top of the radiator,it drops down about 1/2 inch from radiator cap and then stays at this level,i have no over heating problems but effectivley my car doesnt use the overflow bottle as is just sucks it out.has anyone else had this problem?? cheers

Your radiator cap could be stuffed !!!

immortality said:
My 97 V6 berlina is slowly loosing coolant, i fill the overflow tank every couple of months etc. i've tightened all my hose connections etc, their isn't any wet spots inside the car either so i don't think it's a leaking heater core. i've checked the plugs afew times and theres no sign of contamination there, got a compression test when i bought it and alls good there, checked and changed the oil and theres no sign of any coolant in there either it's got me stumped and it's only got 112,000km on the clock. my local wrecker (commodore specialists only)reckons it's a common problem for the ecotec engine to crack heads and slowly use coolant but i find this hard to believe

any ideas
Yes early ecotecs are know to crack heads
 
Last edited:

quiksilver1

New Member
Joined
Apr 16, 2006
Messages
134
Reaction score
0
Points
0
Members Ride
vu ss
ive replaced radiator cap,thermostat and replaced coolant with a flush. ive put on 2 different caps still same problem,as me stuffed.might have to pay someone to look at it
 
Top