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matty w
30-08-2007, 21:21
i've only ever had the car running on the spot till last night but had its mot today so drove it from my unit to home last night when i got back the header tank was bubbling and leaking out of the middle of the cap,the header tank and cap are brand new but the cap seems faulty or could somthing else make it bubble up like thermostat/headgasket?
cheers matty
ae
30-08-2007, 21:34
Normally its just the cap. Think there only £3 or something. Make sure you get the right colour of cap.

Andrew
Allan
30-08-2007, 22:38
the cap has a release on it once it gets to a certain presure, maybe it was over filled? garage do any coolant stuff while there?
Lunner
31-08-2007, 05:12
Once its hot its the pressure of the system that keeps the temps down, without that the coolant will boil as in your case
Scougar
31-08-2007, 10:37
My cap is brown for my valver. The one supplied by schakel (on the forum) is blue. What is the difference?

Matthew
matty w
31-08-2007, 18:15
the cap has a release on it once it gets to a certain presure, maybe it was over filled? garage do any coolant stuff while there?

this is constantly blowing out the cap and you can squeeze the hoses so the system isnt pressurising
schakal
31-08-2007, 18:27
the cap has a release on it once it gets to a certain presure, maybe it was over filled? garage do any coolant stuff while there?

this is constantly blowing out the cap and you can squeeze the hoses so the system isnt pressurising

sounds like a faulty cap ,
however, like i mentioned on another thread valvers run
higher coolant pressure hence you should have a blue cap .

dont take my word for it and look into a haynes for renault 19 16v
not sure if this is mentioned in haynes for clios :roll:
Swervin_Mervin
31-08-2007, 20:50
Well all the valvers I've seen run the brown ones. That's certainly what Renault gave me when I bought one for ULF and that runs some lovely low temps.
clio_rsi_turbo
31-08-2007, 20:54
both valvers ive had, have had BROWN caps.
schakal
31-08-2007, 21:41
in that case haynes is lieing saying f7p s use blue and
all the 8v s use brown caps :roll:
Swervin_Mervin
31-08-2007, 22:39
in that case haynes is lieing saying f7p s use blue and
all the 8v s use brown caps :roll:

Would you lay your faith in Haynes? :wink:

I wouldn't for one second. :lol:
summeh
31-08-2007, 23:54
brown cap on my williams and cup... the renault cup workshop manual also states brown.
schakal
03-09-2007, 19:56
brown cap on my williams and cup... the renault cup workshop manual also states brown.

can you scan that if possible mate ??
i will scan the bit from haynes on here too .
Matty86
03-09-2007, 22:07
my 1.8 8v had a brown cap

my 16v has a brown cap - as did the replacement bottle...



but mine bubbles tiny bits too :(
schakal
03-09-2007, 23:01
http://i66.photobucket.com/albums/h241/renaultparts/S8002811.jpg
stan
03-09-2007, 23:24
with the cap off, is there bubbles coming to the surface whilst the engine is running?
arj256
04-09-2007, 00:04
My early valver came with a blue cap.
I think it was more of an early thing which was phased out?

Have you checked the condition of the seal on the cap?
mon
09-09-2007, 22:06
my 5 turbo had a blue cap was told it was for hotter countrys ie france this is wot i was told at reno they give me a brown cap for five gt when the thermostate went that was same they give me the uk one odd or wot and the car was not a import

oh yea my cap is brown never replaced yet .. but get bubbles when hot after using forte cooling system conditioner