RS 125 Coolant leak and overheating?!? (Helppp)

[RsJohno]

I have a 2001 RS 125 that is leaking/pissing water out of the header tank cap and overheating, I have changed the head gasket, thermostat and radiator, flushed the pipes and bled them and it is still doing it there seems to be a major pressure build up.. Anyone know what the problem could be? The water pump seems to be working as well.

[Kickstart]

Hi

What coolant are you using? 50 / 50 mix of water and anti freeze?

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[RsJohno]

Yeah mate, I am using the correct coolant

[Kickstart]

Hi

If the cooling system is working normally but still pressurising then suggests a 'leak' somewhere. You have changed the head gasket O ring so hopefully that is OK, but possibly time to check for a cracked head or barrel.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Omega]

Could the cap itself be damaged and releasing pressure early? I had that problem on one of my cars. The bottom of the cap had split.

[Omega]

Assuming it is actually overheating. Does the fan turn on when it should?

[Kickstart]