Water Pump Tester Set, 8 pcs

Price: €169.00 330.54лв.

Code:

6750
Weight:

1.010 Kgs

Overview:
✔ Tests mechanically driven water pumps without removal
✔ Measures coolant flow during engine operation
✔ Helps diagnose reduced water pump performance
✔ Detects damaged impellers, seized pump shafts and slipping drive belts
✔ Suitable for testing with the water pump installed
✔ Complete 8-piece diagnostic set

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This water pump tester is designed to check the operation of mechanically driven engine coolant pumps while the engine is running.

The tester measures the pressure increase generated by the flowing coolant, providing an effective indication of coolant circulation and water pump performance.

It allows water pump faults to be diagnosed without removing the pump, reducing diagnostic time and unnecessary component replacement.

Detects Common Water Pump Faults

The tester helps identify water pump problems caused by:

Damaged or broken water pump impellers
Seized water pump shafts
Slipping drive belts
Reduced coolant circulation

Many modern water pumps use plastic impellers. If the impeller breaks internally, it may no longer be securely connected to the pump shaft, resulting in reduced coolant flow while the pump appears normal from the outside. This tester makes it possible to detect such failures with the pump still installed.

Operating Requirements

Before performing the test:

Engine must be completely cold.
Thermostat must be installed and closed.
Coolant level must be correct.
Cooling system must be properly bled.
Follow all applicable safety precautions.

Scope of Delivery

Pressure gauge (0–15 psi)
2 rubber seals
2 blanking plugs
Two-piece tube connector
2 m hose, Ø 6 mm
Hose connector

Original numbers are for comparison purposes only. This is not an original manufacturer tool/product.

Connection Procedure

The connection method depends on the type of cooling system installed in the vehicle.

Vehicles with an Expansion Tank

Most vehicles equipped with an expansion tank have an auxiliary hose running directly between the expansion tank and the thermostat on the engine side.

To connect the tester:

Disconnect the auxiliary hose from the expansion tank.
Connect the tester directly to this hose.
Sealing the now-open connection on the expansion tank can prevent coolant loss but is not required for the test.

Some vehicles with an expansion tank have the auxiliary hose connected to the radiator side of the thermostat.

In these cases, the tester must be connected to a hose that provides direct access to the engine block. In most applications, this is the heater core hose connected directly to the engine.

Vehicles without an Expansion Tank

On cooling systems without an expansion tank, the tester must also be connected to a hose with direct access to the engine block.

In most cases, the heater core hose connected directly to the engine provides the correct connection point.

Connection Options

Connecting to a Pipe

Select the two-piece pipe connector and the appropriate pipe seals according to the outside diameter of the pipe.
Remove the upper section of the connector.
Install the seal with the larger internal diameter facing the pipe being sealed.
Reinstall the upper section and tighten it lightly.
Slide the complete assembly over the pipe.
Tighten the upper section further to achieve a proper seal.
Connect one end of the 6 mm plastic hose to the push-fit connector and the other end to the tester.

If an open pipe must be sealed to prevent excessive coolant loss:

Install the adapter as described above.
Seal the adapter using the supplied sealing component.

Connecting to a Hose

Insert the male hose connector fully into the hose.
Secure it with a hose clamp if necessary.
Connect one end of the 6 mm plastic hose to the push-fit connector.
Connect the other end to the tester.

To disconnect the plastic hose from the push-fit connector:

Press the outer collar of the connector inward.
Pull the plastic hose straight out.

Interpreting Test Results

Idle Speed Test (Below 1,000 RPM)

Read the pressure value on the inner scale.

Result: Needle remains steadily within the blue zone.

Diagnosis: Water Pump Operating Correctly

At idle speed, there should be no significant pressure increase, and the gauge reading should remain stable.

Idle Speed Test (Below 1,000 RPM)

Read the pressure value on the inner scale.

Result: Pressure rises rapidly or the needle oscillates.

Diagnosis: Cooling System Fault

The presence of gas in the cooling system may indicate a leaking cylinder head gasket or another source of combustion gases entering the cooling system.