Coolant leak under pressure

[Bencrowell]

I have a 2000 explorer 4.0 sohc and it's leaking coolant from somewhere at the front of the motor. I have already changed the water pump because I thought that was the problem. I have to add to it every other day and it almost dry. Could do help me on this.

 

[swshawaii]

Almost fail safe way to find coolant leaks is a pressure test. Call around, most larger parts stores offer a kit with a 100% refundable deposit. You said front, but the most common failure with the 4.0L SOHC is the lower thermostat housing.

If so, upgrade linked below:
4.0 SOHC plastic thermostat housing | Ford Explorer and Ford Ranger Forums - Serious Explorations

 

[Tech By Trade]

And the crappy plastic rad tanks, don't forget about the crappy plastic rad tanks.

 

[96firephoenix]

Mine was doing that out the Thermostat housing seal. The t-stat housing is on the pass. side head at the front, right above the water pump.

Be VERY cautious removing the bolts on this. Use a lot of PB blaster (penetrating oil).
If a bolt breaks and can't be removed, you're pretty much hosed. The housing will not re-seal with only 2 bolts.