How much Pressure?

Hi everyone,

My car is a 97 E36 318i

How pressurised should the top radiator hose be after an hour or so of driving?

The reason i ask is because i recently had the car overheat and as a result the head gasket failed. I put a new radiator, water pump, thermostat, hoses, head gasket and had the head skimmed / machined.

After putting everything together and filling and bleeding the coolant now the car seems to build up alot of pressure in the top radiator hose after 30 - 40 mins of driving, to squeeze the hose at this point takes a fair bit of effort.

So i was just wondering how pressurised it should be

Thanks

you problably have an air bubble trying to get out open the cap and start the car from a cold start and once it warms up the air bubble should be released by then

thank you for your reply, i'll try it in the morning

It *should* take a fair bit of effort to squeeze it.

System should have pressure when up to temp usually about 12 to 17psi, this raises the boiling point of the coolant. Craig B

Thanks for all the replies guys