As the Chuckle Brothers would say:
Oh dear, oh dear, oh dear...
Temp needle hit the red on the way home today so I stopped off and popped the bonnet. First thought: bleed the system.
So I undid the screw up near the bulkhead.
Psssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss....
*carries on hissing*
*continues to hiss*
*doesn't stop hissing.
Opened the res cap, to be met with the sight of lots of steam...and not much water. Thankfully I went to the nearest shop and bought a 2.5 litre bottle of Evian water. Returned to the car and topped it up, then got home without any major issues.
Parked up at mine and instantly filled the res tank full, started the engine and continued to bleed the system.
Water level in the tank continued to drop.
I looked into the engine bay, and saw a constant long dripping of water, from between the exhaust manifold and the cat
Have I actually got a knackered HG this time?
Water is clearly escaping in floods, and there's also a lot of steam that comes out of the exhaust when I rev the car.
On the plus side... I had hot air coming out of the vents in the car whilst there was water in the system.