Join Date: Jul 2000
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Perkins 4.108 overheating
Suggest you check out your heat exchanger. If it hasn''t been maintained, it''s possible for the fresh water(header tank water) to escape through the heat exchanger tubes.
A low water level in the fresh water supply will surely result in high temps as the fresh water supply is the engines only way to get rid of heat.
Heat exchangers deteriorate if the zincs have not been maintained. Once a leak develops between the salt water (raw water) tubes and the engine coolant, heating problems are sure to follow.
Remove the heat exchanger and have it checked out by a radiator shop. If they are near salt water, they are probably familiar with heat exchangers and their maintenance.