Hi Guys. I'm losing about 1.5lts of coolant a week from my VR and its getting worste. It has a new radiator and cap, thermostat and housing with new gasket, and most of the hose pipes are new. It is sucking coolant from the reservoir when needed and only overheats when low on coolant. If I turn the engine off when hot, I can here a bubbling sound comming from somewere halfway up the engine on the LH side (coolant feed-in side). Now my car has LPG and theres some short hoses hidden in there somewere but I havn't seen any leaks. Any suggestions?
If there is no visible coolant leaking from the car it could be a leaking valley gasket between the inlet manifold and the head. Check under the oil cap of milky sludge. I have have this drama a few times on mine. The same spot everytime it requires the removal of all the intake and the manifold and replace the gasket. Make sure to tension to torque spec, cause it is easy to over tighten them
All GO
Check the similar threads at the bottom of the page, hopefully a few things in there you can try.