yar thre is a pipe which connect pump to kangi,mine was lose from that point so it was gvng sound,so aftr replacing the pipe its gud as new and before replacing 2,3 mechancs and cavalry honda pit stop mechanc told me that its pump noise,i will recmnd u to plsssssss visit honda city sales at kamla chowk,i have awsm exprnce with them regrdng my reborn(8th gen) ..