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How to Pressure Test Vehicle Cooling System
Created on: 2019-03-07
How to use an antifreeze pressure tester and shows where to find potential leaks depending on the location.
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step 1 :Pressure Testing the Coolant System
- Place a drain pan near the suspected leak spot
- Remove the cap from the overflow bottle
- Pour coolant into the overflow bottle
- Insert the coolant pressure tester to the bottle with an adapter
- Press the pump and do not apply more pressure than what matches the psi labeled on the overflow cap
- Locate the spot of the leak
- Follow the drip and find its location
- If fluid is leaking out of the front, it could be a lower radiator hose or the radiator
- If fluid is leaking out of the engine block, check the water pump and intake gaskets OR
- Check the lower and upper radiator hose, hose clamps, or the thermostat
- If fluid is leaking near the fire wall, check the heater hoses
- If fluid is leaking near the drain near the firewall, check the heater core
- If fluid is leaking into the passenger compartment, check the heater core
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