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[05omegav6]

Day off today so new water pump and rad cap but when left running header tank still overflows now I'm starting to Scratch my head 

Did you inspect the neck of the tank

[Diamond Black Geezer]

I'm sure a tenner is about the going rate for a header tank on OOF. probably cheaper than a new Vx cap, at a guess. I'd have thought most memebrs have their old yellowed ones in the garage, that they replaced with nice new white ones...?

[TheBoy]

I'm sure a tenner is about the going rate for a header tank on OOF. probably cheaper than a new Vx cap, at a guess. I'd have thought most memebrs have their old yellowed ones in the garage, that they replaced with nice new white ones...?

Anybody want the remains of mine

[omega3000]

I'm sure a tenner is about the going rate for a header tank on OOF. probably cheaper than a new Vx cap, at a guess. I'd have thought most memebrs have their old yellowed ones in the garage, that they replaced with nice new white ones...?

Anybody want the remains of mine

Its in my garden 


Anyway my monies on a partially blocked rad for diagnosis , rad can have hot and cold spots ..you have to check all over 

[TheBoy]

If its not pressurising, it has to have a leak?  Clearly it has, around bottle/cap.  Has the bottle been inspected yet?

[05omegav6]

If its not pressurising, it has to have a leak?  Clearly it has, around bottle/cap.  Has the bottle been inspected yet?

Proving to be an elusive answer

[chrisgixer]

I'm confused.

Is your expansion tank overflowing with cap on? If so surely you can see where it's pishing out from?

Or as usual have i missed the point? 

Cap releases pressure at about 30psi and will over flow with cap on. There's is a release valve in the black bit with two holes in on the under side.

[henryd]

If not pressurising then either the cap has failed... in which case, replace it...

Or the tank has failed... check for cracking around the neck...

My money is on the cap though

+1

[irmsher elite]

Not rad not cap or header tank therostat jammed solid so new one fitter tomorrow and that is for all the suggestions guys and once fixed and washed I will put some Pics up

[ckz]

My guess !

[tidla]

My guess !

Mine too but with it comes the temp gauge maxing out with the warning light on and rock solid coolant hoses just before the cap releases the excess pressure.

[ckz]

Agreed, depending on who and when this all is checked. 

[irmsher elite]

well thanks for all the help and tips guys n girls but its down to being head gasket so the old girl has now been put in the garage and started stripping so off road til after xmas so i can take my time sorting it and get her back up and running but minus AC 

[Shackeng]

no not pressurising as no pressure when i release the cap and still nothing flowing from top hose from rad to header tank 

And yet it was the head gasket.

[symes]

When my miggy kept doing that-it was a blockage in throttle butterfly housing-unblocked it with airline