Any suggestion on the cause of "clacking" from my
exhaust, I think it is from the
exhaust. See video link below.
The video sound is not perfect the sound is a definite clack. Sounds like a leak in the exhaust. The normal exhaust outlet sounds normal and plenty of
water flowing and with the lids closed it is not particularly noticeable. The
engine was recently lifted for new mounts and
oil seals.
Engine is a
Westerbeke 3B30 and this makes it sound like an old tractor engine, which it is
(Mitsubishi L3E).
I have:
Sprayed everywhere with soap
water - no obvious
leaks.
Replaced the top hose (engine to box)
Removed the water box and pressure tested it. No
leaks. Not a high pressure test just a standard bike
pump with rubber seal and hand blocking the outlet. The box is simple just an empty box with an inlet pipe and an outlet pipe at the top that extends 75% towards the bottom. Hard to imagine anything to fail.
Rubbed the box to exhaust outlet hose with soapy water no obvious leak and no change in sound (like going over a weak area).
Poking around covering things etc produces no change in sound.
In
gear out of
gear makes no difference.
Any suggestions welcome:
Video;
https://youtu.be/Eamx8ZqfI0w
Thanks all