Pressure building in top rad hose-head gasket failure? (00 V6 type-r)

B4 soon

Petrolheads
Can anyone confirm head gasket problem? Car not over-heating yet. Or is it possibly just thermostat? Also approx cost for head gasket replacement-best to do both together
 
What exactly are the symptoms if the car isn't overheating?
 
I haven't seen the car at all Andy-I was asked to diagnose it over the phone-all the lad has given me is that theres pressure building in the coolant hose and as soon as he noticed he parked the car.
 
oh OK. How does the guy know there is pressure building in the rad hose?
 
Rad hoses will get hard with pressure once the system is up to temp, this is normal and not a symptom of anything.

A faulty thermostat or headgasket failure will lead to over heating, although it is possible to have a head gasket fail slightly and not have the car overheating.

Best thing to do is a Hdrocarbon sniff test, it will tell you in 1 min if the head gasket is gone or not
 
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