XR6 TURBO DUMPED OUT COOLANT FROM RESERVOIR HOSE

[XRBOY85]

Hi guys

 

My xr6 turbo bf dumped coolant out of my reservoir bottle hose line around 250ml or so after a 30 minute drive when turned car off at home and has it done it once about a year ago but was overfilled that time so I drained it to half way the reservoir tank 

 

I have a aeroflow reservoir tank and cap but have noticed the cap making a hissing bubbling noise when at operating temperature or hot  so thought maybe the cap ? 

 

I checked my tank and was still at the same level it was last checked few days ago so the level is still the same so very strange as was not overefilled recently 

 

New radiator and thermostat has been done around a year ago 

 

Im a Bit stuck atm so can only do a aeroflow cap change as a cheap test 

 

Any help would be great or any ideas 

[k31th]

Firstly the cap of an overflow tank should not make a hissing noise at any time other than undoing it... I think that's the best course of action for testing it out is to replace the seal etc for the cap.

[XRBOY85]

I just got a replacement cap now as the one I had on was two pieces in the cap and the rubber seal spring came unstuck in two 

 

When I remove the old one the cap comes off and the rubber and spring stays in the tank 

 

so most likely not sealing as the new one is one piece together 

 

Hopefully