Hi all, first the symptoms...
MG ZS 120 heater keeps going cold, top rad hose feels like a tight balloon when hot and temp gauge rising worryingly towards hot if I idle for long on after a run. No water/oil mix and not using any water. I am assuming I have a leaking CHG that is pressurising the coolant.
1 - Your thoughts on the diagnosis please? Any ideas on how to confirm diagnosis without chemical testing?
Secondly if there is a consensus that it is CHG I am planning on taking every shortcut possible - it's my daily driver and I want to turn the job around quickly without compromising the job. The timing belt, water pump, tensioner and IMG are all quite new.
So what shortcuts are feasible?
I'm thinking about splitting the exhaust below the manifold (it's all newish and I replaced all the bolts and nuts), leaving the inlet manifold in place on the head and not removing the bottom pulley. Will take the chance to replace the thermostat while head is off as I have never changed it before. Am I right to think the engine mount will have to come off to access belt tensioner?
Any tips welcome. If I'm not wrong I hope to get away with a small parts list of head gasket, bolts and stat. I already have a cam-cover gasket here I haven't fitted yet. If head mesures flat and liners are all okay is this feasible?
Cheers, Bill
MG ZS 120 heater keeps going cold, top rad hose feels like a tight balloon when hot and temp gauge rising worryingly towards hot if I idle for long on after a run. No water/oil mix and not using any water. I am assuming I have a leaking CHG that is pressurising the coolant.
1 - Your thoughts on the diagnosis please? Any ideas on how to confirm diagnosis without chemical testing?
Secondly if there is a consensus that it is CHG I am planning on taking every shortcut possible - it's my daily driver and I want to turn the job around quickly without compromising the job. The timing belt, water pump, tensioner and IMG are all quite new.
So what shortcuts are feasible?
I'm thinking about splitting the exhaust below the manifold (it's all newish and I replaced all the bolts and nuts), leaving the inlet manifold in place on the head and not removing the bottom pulley. Will take the chance to replace the thermostat while head is off as I have never changed it before. Am I right to think the engine mount will have to come off to access belt tensioner?
Any tips welcome. If I'm not wrong I hope to get away with a small parts list of head gasket, bolts and stat. I already have a cam-cover gasket here I haven't fitted yet. If head mesures flat and liners are all okay is this feasible?
Cheers, Bill