How to Winterize a Volvo Penta 4.3 | Winterizing Volvo Penta 4.3 Engines 2023

Last Updated on August 16, 2023 by Jisan

Volvo Penta 4.3s are winterized by removing the water from the engine block, manifolds, and exhaust system. This is done by draining the cooling system and then running the engine until all the water is removed from these areas. The engine should then be shut off and allowed to cool completely.

Once cooled, the oil should be changed and the engine should be stored in a cool, dry place.

  • Assuming you have a Volvo Penta 4
  • 3: 1
  • Remove the engine cover and air filter housing
  • Disconnect the negative battery cable
  • Drain the cooling system by removing the lower radiator hose at the engine block
  • Remove the raw water pump impeller and inspect it for wear or damage
  • Install a new impeller if necessary
  • Lubricate the shaft with waterproof grease and reassemble the pump, making sure all O-rings are in place and properly seated
  • If your engine has an oil cooler, disconnect the hoses at both ends and remove any debris from inside them
  • Flush the hoses with fresh water and reinstall them, making sure they are properly seated and clamped
  • If your engine does not have an oil cooler, skip this step
  • 4A (Manual Transmission Only)
  • Change gear lube according to Volvo’s maintenance schedule for your particular model year of boat
How to Winterize a Volvo Penta 4.3
How to Winterize a Volvo Penta 4.3 | Winterizing Volvo Penta 4.3 Engines 2023 2


Where are the Drain Plugs on a 4.3 Volvo Penta?

Assuming you are referring to the drain plugs on the engine block, there are two of them. One is located on the front of the engine, near the water pump, and the other is on the back of the engine, near the oil filter.

How Do You Winterize a Volvo Penta Boat?

Assuming you have a Volvo Penta inboard engine in your boat, winterizing it is not difficult and only requires a few supplies that can be picked up at any marine store. First, you’ll need to add fresh fuel to the tank. This will help prevent condensation and corrosion inside the tank over the winter months.

You should also add a fuel stabilizer to the tank, which will further help protect the engine from corrosion. Next, you’ll need to change the oil and filter. Used oil can contain moisture and other contaminants that can damage your engine over time, so it’s important to start with fresh oil in the spring.

Once the oil has been changed, you’ll need to flush out the cooling system. To do this, disconnect the hose that goes from the raw water pump to the engine and place it into a bucket of clean water. Start the engine and let it run until all of the antifreeze has been flushed out of the system.

Once this is done, reconnect the hose and fill up the system with fresh antifreeze – making sure to use a 50/50 mix of water and antifreeze. Finally, you’ll want to fogging spray into each cylinder through spark plug holes while cranking over slowly for about 30 seconds per cylinder without startingthe engine This step helps prevent rusting inside cylinders during storage..

How Do You Drain Water from a Volvo Penta Engine?

Volvo Penta engines are designed to work with a closed cooling system, meaning that the water that circulates through the engine is sealed off from the atmosphere. This means that you can’t simply open a valve to drain the water out of the engine. Instead, you need to follow a specific procedure to safely remove all of the water from the system.

1. Start by disconnecting the negative battery cable to prevent any electrical shorts. 2. Next, locate the sea water inlet on the side of the engine block and disconnect the hose leading into it. 3. Then, find the raw water pump on the front of the engine and remove its belt.

How Many Gallons of Antifreeze Do I Need to Winterize My Inboard Boat?

Assuming you have a standard inboard boat, you will need approximately 3 gallons of antifreeze to winterize your boat. This includes draining the water from the engine block, manifolds, and outdrive. To do this effectively, you will need to use a non-toxic RV antifreeze that is safe for both fresh and salt water systems.

BOAT – Quick Winterizing – Volvo Penta 4.3 GXI


Assuming that the reader has followed the steps in this blog post, their Volvo Penta 4.3 should now be winterized and they can rest easy knowing their engine will be protected from the cold weather. This process may seem daunting at first, but with a little bit of knowledge and patience, anyone can do it.

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