Marine exhaust systems are an important and often neglected engine of a ship. Most ships have a system of "wet" exhaust. The outlet for the exhaust gases from the exhaust manifold - the salt water is injected into the column. This mixture of gas and water is then passed through a series of curves to it from the boat, preferably in the back.
Exhaust fumes mixed with salt water to create a highly corrosive compound. This is why exhaust systems are often non-corrosiveComponents such as nitrile rubber reinforced hose (brown - not green - stripe), galvanized steel, fiberglass or plastic. The purpose of these components, which vary in size and shape depending on the size of the engine and the layout of the engine room is to prevent the engine hydraulicing. This occurs when an engine full of salt water that entered through the exhaust and can cause considerable damage if left for more than two hours. The water enters the exhaust gas to swell in the tail and armDrain design. In some sea conditions, such as by sea, the water can again be forced to exhaust when the engine is not running. Drains poorly designed, that water will flow back and fill the waterlock / muffler box then the hose in the exhaust manifold, exhaust valves and combustion chamber. With the engine full of water can not compress the engine crank over, it is not like water.
Exhaust System
You will know that your engine is if you do not turn around hydrauliced -usually after a long period of sailing - and removing the starter and make sure it works. To remove remove water from inside the combustion chambers, first of all injectors, crank engine blowing over the water, replace vent injectors, injector lines and restart. Then leave the motor running until exhaust fixed.
Check that the mast is not coke up or corroded - a common problem. To check the exhaust riser remove the drain hose from the riser (often a difficult procedure)and look at the line, to see if it is the accumulation of exhaust / salt restricted. When building the riser is too large to be removed in order to check the engine side of the line. Coke can be scraped off as a short term fix although often the riser must be replaced. There are aftermarket systems which vary in quality. Make sure you fit the right model for your application.
Make sure that the water-lock is low enough and large enough to hold all the water in the exhaust system. There is aA gooseneck or central vertical loop in the vent pipe to rely on the mirror? It is a siphon break and function - without valves leak?
Exhaust is toxic and can cause motion sickness and headaches. Replace defective components immediately. Use double hose clamps on each joint or, preferably, super, the style of concrete drain bolt, if necessary. Hot sections should be insulated with fiberglass tape to prevent burns.
Asbestos Warning delayed. Many larger vessels andMarine engine installations had exhaust systems that were lagged with asbestos tape and rope. Asbestos was common in older boats noise.
Understanding A Marine Exhaust System
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