m52 help

[SHAZ325iSPORT]

Got a e30 here with a m52

building up a hell of alot of pressure

any ideas?

Bled the system a few times,not overheating at all

[rich318i]

seems like that time of year everyones having cooling problems or leaks.

get a new rad cap first off

You loosing any water?

[SHAZ325iSPORT]

No lose of water

[rich318i]

in what way is it over pressuring then?

[SHAZ325iSPORT]

Hoses are rock solid

[rich318i]

when up to temp?

what rad you running?

[wullie325i]

when did it start i.e had you drained it then filled as they are a pig to bleed up correctly and end up cracking expansion chambers if not watched over when bleeding

[SHAZ325iSPORT]

Builds up pressure after 10-15 mins from cold

i just bought the car today so dont know how long its been like this

There is a small leak near expansion bottle but i assume thats because of the system pressurising

its a e36 rad

[Brianmoooore]

At 2 bar, the hoses should be 'rock solid' - 30 lbs pressure for every square inch of hose area.
If the PRV in the coolant bottle cap isn't blowing off, then there's no problem, unless the cap is faulty.

[wullie325i]

if its leaking from there it most likely didn't get bled correctly in the first place, did this with the first m5x engine i bled and cracked the expansion tank oops.

get a new expansion tank on it and bleed it up and you should be all good assuming theres no other issues with the cooling system.