Hello everyone.. after sitting back and reading on here for quite a while i thought i would ask a question hoping for advice , after spending quite some time cleaning my pride and joy i decided to fire her up and let her run for a bit, whilst she was running i was looking over the engine and noticed bubbles coming from what i believe is the intake duct rubber , obviously this shouldn't happen , is it quite a straight forward job to replace this part? and is it quite common problem? any advice is much appreciated..