Tohatsu 4 stroke 9.8 exhaust just got a lot louder

[Sailordog]

Hello all, my 2009 4 stroke Tohatsu ( MFS9.8A3) exhaust just got a lot louder, as in if it was my car I’d be looking for a hole in the exhaust pipe. It still runs normally, no chocolate milk in the oil, and nothing I can detect as an exhaust leak in the engine compartment. I still get exhaust out of the above water port along it a normal water telltale and thru prop exhaust .
problem is same whether engine is cold or hot.
any help with idas are most appreciated.

 

[pvanv]

Verify the timing. You can use a timing light. If the gear belt jumper a tooth, the valves could be opening late.

 

[Sea Rider]

With use and heat all gaskets will cede in a bit, adjust tight with wrench all the bolts located under the pan, if bit lose exhaust will be heard louder than when factory delivered, check.

Happy Boating

 

[raczekp1]

salt water motor?

 

[Sailordog]

Great ideas, I’ll give them a shot.
yes, salt water - sorta, upper Chesapeake
thanks to everyone