In the interest of renewing parts when it is much easier to do so, I decided to install a new water pump and coolant inlet hose that are mounted behind the engine, under the inlet manifold. I purchased a new water pump and hose from my local auto parts store. In Australia we never had the Toyota EP82 Starlet GT or EP91 Glanza V turbo Starlet model for sale but luckily the water pump and hoses are the same for all 4E-FE & 4E-FTE engines so the pump & hose for the Australian market EP91 (4E-FE) will fit my EP82 engine.
Replacing the water pump and the pump inlet hose (short hose that runs behind the engine from the thermostat housing to the water pump inlet pipe) would be a much bigger job if it had to be done with the engine installed.
I removed the entire pump/hose assembly, unbolted the original water pump and cleaned up the gasket surfaces.
While I had the pump assembly out, I remembered the coolant return connection on the pump inlet pipe. This normally connects to the throttle body and is used for warming the throttle body in extreme cold conditions. This is not be required in my moderate climate so I cut the connection off, made a small plug on the lathe and welded it closed.
I then bolted the new water pump (with gasket) onto the assembly, applied some gasket sealant and bolted the whole assembly back on the engine block.
Replacing the water pump and the pump inlet hose (short hose that runs behind the engine from the thermostat housing to the water pump inlet pipe) would be a much bigger job if it had to be done with the engine installed.
I removed the entire pump/hose assembly, unbolted the original water pump and cleaned up the gasket surfaces.
While I had the pump assembly out, I remembered the coolant return connection on the pump inlet pipe. This normally connects to the throttle body and is used for warming the throttle body in extreme cold conditions. This is not be required in my moderate climate so I cut the connection off, made a small plug on the lathe and welded it closed.
I then bolted the new water pump (with gasket) onto the assembly, applied some gasket sealant and bolted the whole assembly back on the engine block.
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