To ensure that a marine engine will run efficiently at all times, a great deal of time, effort and resources must be invested, whilst also considering the complexity and number of parts it has. However, it is not uncommon to run into a few problems that can cause complications when taking the ship from one port to another.
To be better prepared and remedy these setbacks, we have compiled the most common problems you should be aware of when it comes to dealing with marine engines.
Air leakage
Because the air control is constantly in an open position when the engine is in use, leakages in this area are often overlooked. Perform an intentional blackout for all the machinery to be in the ‘stop’ position so that it will be easy to locate the hissing noise or the leakage. This problem can be resolved by simply tightening or replacing the affected pipes or joints.
Fuel leakage or fuel valve malfunction
If there is an anomaly with the fuel treatment or the fuel temperature is not properly maintained, it will lead to cracks and leakages in the fuel system, especially in the fuel valve. To avoid this from happening, the ‘high-pressure leak off tank’ level and alarm must be constantly supervised.
Sparks in the main engine exhaust
Due to the boats/ships constantly slow sailing and frequent manoeuvrings, sparks from the main engine’s exhaust may occur occasionally, which leaves soot deposits on the EGB boiler path. Schedule a monthly cleaning of the exhaust gas boiler to avoid this issue.
Stuck fuel rack
There may be times when there is an alteration in the engines RPM or the engine will not even start at all, especially with 2 stroke marine engines. This usually happens when the fuel rack gets stuck, resulting in a lack of fuel supply to the concerned unit. To prevent this from happening, ensure that the mechanical links are well lubricated and greased at all times.
Faulty alarms and sensors
The main engine is equipped with different sensors that measure and transmit actual data to the alarm console. However, these sensors may crash due to factors such as vibration, high temperature, humidity and dust. To avoid receiving false distress signals regularly check all engine room sensors and alarms.
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