- Petaluma, CA
Dry everything. With reassembly use gasket sealant. Maybe a little mist and coat of anti-rust oil on everything would be good. Pressure washing a motor is not generally a good idea. I use a spray bottle by hand, gently. The topics with salt air will rot metals. The humidity gets in everything. It is not a dive watch. Part of it is also the microbes in the tropical air. Conditions nice for walking in flip flops are not necessarily great for things like motors. I wish you well. Some people in the tropics will spray the underside of their vehicles with used motor oil to prevent rot. This corrosion even happens inside walls of concrete as the rebar expands with rust.