Even though my boat has no insulation on the bulkheads around the engine its really not what I'd call noisy. I'd check in the engine compartment and make sure there are no exhaust leaks from the manifold to cyl head gaskets, and no leaks at the rubber exhaust hoses after the risers. Any leaks here will definitely increase noise and are dangerous because of carbon monoxide.
_________________ 88 Four Winns 200 Horizon 4.3 OMC Cobra-4bbl 2002 Walker Bay 10/2012 Suzuki 2.5 2008 Walker Bay 8
1998 Jeep Grand Cherokee 4.0/Selectrac 2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II
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