Hi all

Just collected my RS after 7 weeks away and driving home it was running great loads of power, stopped off for fuel and all was well. Started off again and the car appeared to of lost 60% of its boost. Got the car home and noticed a funny smell so a quick look around and I noticed that the header tank had pressurised a lot. Released the cap slowly as the water would of spilt over. A look at the plugs and the oil cap don't show any signs of a head gasket and the car doesn't have any misfires.
Can anyone shed any light on this pls
Car is SAbre mapped to 330 and has uprated hoses, intake, exhaust etc along with an uprated Dv and wastegate.

 

check thermostat is opening, check water pump is pumping and finally get headgasket checked i have done a lot of headgaskets on focus rs's everyone i have done has needed a new head too as they usually crack between the valve seats and spark plug thread on all 16 valves!

 

Head gasket.... Gas into water by the sounds of it so wouldn't mix with the oil.

Thanks my opinion anyway !

 

as above sounds like head gasket if system is pressurising

 

Bet you have lifted your head, time for stud and nut, been there done it.