Looking for some advice. My 2005 Suzuki DF140 has become quite noisy at tickover. it is an exhaust noise, and does not become worse with increased revs - see a vid here:
There is some sort of exhaust port just along side the cooling water tell-tail - see photo. At tickover there seems to be exhaust coming out of it, and not much exhaust underwater. Is there meant to be a bung in this port? If anyone else has a DF 140 and could take a photo of the port on theirs, it would also be appreciated. Thanks!