Can any1 tell me whats wrong

[Stef 2u]

Need Advice please!

I got a mk1 Clio RT damn things making whooshing water noises through my heater matrix and in the expansion tank any1 know whats wrong?

 

[fUbAr]

hello and welcome.

 

[Munson]

Sounds like you have airlocks of some kind in your water system. Im sure someone will have a better answer though