Vz commadore parts enquiry

[Commydo]

Hi,my vz commadore has started to overheat,turned the car off and coolant in reservoir was bubbling,
The radiator cap was very tight to open but eventually got it,the cap actually looks fine but maybe I should just buy a new one?
What's the difference between the radiator caps from repco/supercheap,
1 of them is rated to 17psi and the other is 18psi,what one should I get or does it even matter,
They both come up when I type in the parts number
Cw18125

 

[stick3]

you need the 120 kpa cap with the spring best ones are genuine and when you check the coolant you should see it and these caps are becoming very pricey last time i paid over 40 bucks at holden last year

vz genuine radiator cap - Google Search

 

[Commydo]

you need the 120 kpa cap with the spring best ones are genuine and when you check the coolant you should see it and these caps are becoming very pricey last time i paid over 40 bucks at holden last year

http://[URL]https://www.google.com/...MDYyMmowajE1qAIAsAIA&sourceid=chrome&ie=UTF-8

[/URL]

Cheers,when u say check the coolant do u mean in the reservoir tank,or should I see coolant after taking the radiator cap off?
When I take the radiator cap off its got 2 holes lol,one going into the engine and one is going to the radiator,I can't see any coolant there but reservoir has some

 

[Fu Manchu]

The cap needs replacing and coolant filled. Then air bled out. If you don’t bleed the air, you’ll need to top up the reservoir very frequently for a week or so. You do t want it to run dry.

 

[Commydo]

Cheers,when u say check the coolant do u mean in the reservoir tank,or should I see coolant after taking the radiator cap off?
When I take the radiator cap off its got 2 holes lol,one going into the engine and one is going to the radiator,I can't see any coolant there but reservoir has some

The cap needs replacing and coolant filled. Then air bled out. If you don’t bleed the air, you’ll need to top up the reservoir very frequently for a week or so. You do t want it to run dry.

Ahright,,any ideas how to fill/bleed correctly?

 

[stick3]

Cheers,when u say check the coolant do u mean in the reservoir tank,or should I see coolant after taking the radiator cap off?
When I take the radiator cap off its got 2 holes lol,one going into the engine and one is going to the radiator,I can't see any coolant there but reservoir has some

when unscrew the cap you should see coolant sometimes it doesnt suck from the reservoir and check it weekly at least

 

[Fu Manchu]

https://forums.justcommodores.com.au/threads/vz-ve-vf-alloytec-cooling-system-repairs.279976/

 

[stick3]

https://forums.justcommodores.com.au/threads/vz-ve-vf-alloytec-cooling-system-repairs.279976/

fu here is a couple of pics filler neck is the opening same or bigger on yours

 

[Fu Manchu]

Same. They are all the same.