Why Is My Volvo Penta Marine Diesel Engine Overheating?
Even though Volvo Penta’s marine diesel engines are renown for their high quality and reliability, they are known to overheat given the right sort of circumstances. If you’re experiencing this sort of problem with your engine, it’s likely the result of one of the situations outline below. Think carefully about how you have been using your engine recently and try the suggestions for rectin caseying the problem.
When you navigate your boat into shallow water, such as nearly to the shore, you may find that it scrapes along the seabed. Whenever a boat does this, is will pick up a layer of the debris that has been resting there, whether it’s silt, sand or even mud. When you venture back out into deeper water, this debris is quickly washed away, but in case you have spent a long time in the shallows it’s known to clog the raw water pump, the drive water intakes or the heat exchanger. All of these scenarios could cause your Volvo Penta to overheat.
Sometimes, the thermostat and sending circuit of the engine can fail. The thermostat is a vital component of the engine, as it controls the timing of cooling water intake, which enters into the cooling galleries around the cylinders and in the exhaust compartment. The sending circuit works with the thermostat to operate the circulating pump valve, so in case the circuit fails so does the pump. Either of these failings can cause the Volvo Penta to overheat.
The circulating pump is essential for moving water by means ofout the engine. There are a number of issues that could cause this pump to fail, the main culprits being a damaged impeller and a cracked housing (which reduces the water flow). The raw water pump is essential for picking up the water that the circulating pump uses. It may also fail due to a damaged impeller and sucking debris up with the water. If either of these pumps fail, the engine will overheat.
If your Volvo Penta marine diesel engine has been overheating lately, you will need to take a look at the above problems as being the cause. If you cannot recall having taken your boat into shallow water recently, it’s like that the problem will be a more serious problem within the engine itself. Whilst the first scenario is easily fixed by cleaning out your engine and the bottom of your boat, the other two will require some pretty serious (and somewhat costly) repairs.
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