The small pipe I was referring to earlier goes into the header tank. If your not sure whether coolant is coming out of it or not just pull it off and start the car. There should be a steady stream going back into the header tank.
I hope your optimism is correct! What's the best way to get rid of an airlock? Because on Saturday I opened the bleed screw and ran the engine to try and get rid of it but that hasn't worked. And would the airlock prevent the water coming out from the bleed screw because nothing comes out when it's undone.
Would the air be getting in through the header tank cap? That's been suggested to me a few times.
You're right! I forgot about the bleed screw on the metal pipe.Remember that there should be two bleed screws.
You're right! I forgot about the bleed screw on the metal pipe.
Where is the second bleed screw?
It's on the bottom hose link pipe. You'll find it at the end of the engine, above the bell housing to engine joint.
I, like RB think you have a fire ring that has started to let go.
Once you locate it - it is not that hard to get to with an extension. I think its a 8mm nut. You should bleed this one first since its located lower then the other bleed screw (the plastic one on the rubber pipe).
also take the small pipe of at the header tank with engine just on start up and blow into it if the jiggle valve is stuck it may release it.
Smoke or steam? Either way rather suspicious. Where was it coming from?
Near the alternator? Possibly the bead on the gasket has failed - any update?
Loss of pressure: the system is pressurised which raises the boiling point of the coolant. If it has a leak, the water will boil away at its more usual 100C. Then, as airlocks form, the circulation within the cooling system fails, leading to overheating...