Coolant leak

Tiny
RAPTOR222
  • MEMBER
  • 2013 FORD F-150
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 68,000 MILES
I have a coolant leak that appears to be coming from the water pump. Not sure if it is the o-ring or not.
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Wednesday, May 1st, 2019 AT 10:26 AM

6 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good evening,

If the water pump is leaking, most likely it is leaking from the weep hole, not the gasket.

You need to pressure test the system to verify.

https://www.2carpros.com/articles/radiator-pressure-test

Roy

Procedure

Removal

All vehicles

1. Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding .

2. Remove the air cleaner outlet pipe.

3. Loosen the 4 coolant pump pulley bolts.

4. Remove the accessory drive belt.

Vehicles with an A/C compressor belt tensioner

5. NOTICE: Remove the A/C compressor belt to prevent coolant contamination of the belt.
Remove the A/C compressor belt.

Vehicles without an A/C compressor belt tensioner

6. NOTICE: Cover the A/C compressor belt to prevent coolant contamination of the belt.
Completely cover the A/C compressor belt with waterproof plastic.

All vehicles

7. Remove the thermostat housing. For additional information, refer to Thermostat Housing- 5.0L See: Thermostat Housing, Engine Cooling > Removal and Replacement > Thermostat Housing.

8. Remove the bolts and the coolant pump pulley.

9. Disconnect the heater outlet hose from the heater outlet tube.

10. Release the clamp and disconnect the degas bottle-to-engine hose from the heater outlet tube.

11. Remove the 4 bolts and the coolant pump.

12. If a new coolant pump is being installed, remove the bolt and the heater outlet tube.
- Remove and discard the O-ring seal.

Installation

All vehicles

1. If a new coolant pump is being installed, install a new O-ring seal on the heater outlet tube and lubricate it with clean engine coolant.

2. Install the heater outlet tube and the bolt.
- Tighten to 10 Nm (89 lb-in).

3. Inspect the sealing surfaces and clean with metal surface prep. Follow the directions on the packaging.

4. NOTICE: Align the bolt holes with the bosses prior to insertion of the coolant pump and insert the pump straight into the coolant pump cavity. Do not rotate the coolant pump once installed in the coolant pump cavity or the O-ring seal can be damaged, causing the coolant pump to leak.
NOTE: Install a new O-ring seal and lubricate it with clean engine coolant.
Install the coolant pump and the bolts
- Tighten the coolant pump bolts in 2 stages.
- Stage 1: Tighten to 20 Nm (177 lb-in).

- Stage 2: Tighten an additional 60 degrees.

5. Connect the degas bottle-to-engine hose to the heater outlet tube and position the clamp.

6. Connect the heater outlet hose to the heater outlet tube.

7. Position the coolant pump pulley and install the bolts finger tight.

8. Install the thermostat housing. For additional information, refer to Thermostat Housing- 5.0L See: Thermostat Housing, Engine Cooling > Removal and Replacement > Thermostat Housing.

Vehicles without an A/C compressor belt tensioner

9. Remove the plastic from the A/C compressor belt.

Vehicles with an A/C compressor belt tensioner

10. Install the A/C compressor belt.
- Rinse off any coolant from the accessory drive pulleys using clear water prior to belt installation.

All vehicles

11. Install the accessory drive belt.
- Rinse off any coolant from the accessory drive pulleys using clear water prior to belt installation.

12. Tighten the coolant pump pulley bolts in a criss-cross pattern.
- Tighten to 25 Nm (18 lb-ft).

13. Install the air cleaner outlet tube.

14. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding .
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Wednesday, May 1st, 2019 AT 5:23 PM
Tiny
BMDOUBLE
  • EXPERT
I second the weep hole statement! The bearing also go out on these between 60-80k miles on average.
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Wednesday, May 1st, 2019 AT 6:24 PM
Tiny
RAPTOR222
  • MEMBER
Thanks for the quick replies guys! It s not coming out of the week hole, it s coming straight out the front of the water pump housing. Either way it obviously has to be replaced. Any tips on which company to buy from? And should I replace the thermostat or anything else while I m down there?
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Wednesday, May 1st, 2019 AT 6:27 PM
Tiny
ASEMASTER6371
  • EXPERT
I would check with rockauto. They have the best prices for these parts.

I would also replace the thermostat while you are doing this and of course, new coolant.

Roy
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Thursday, May 2nd, 2019 AT 2:14 AM
Tiny
RAPTOR222
  • MEMBER
So do I just need to change the thermostat, or the thermostat housing as well? And do I need a new water pump gasket as well as the water pump?

Thanks for all of your help! This is my first major fix on this truck
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Thursday, May 2nd, 2019 AT 8:14 AM
Tiny
ASEMASTER6371
  • EXPERT
The gasket comes with the pump.

Yes to the housing as well.

Roy
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Thursday, May 2nd, 2019 AT 8:50 AM

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