Leak from rear of engine and by compressor

[Sean851]

2000 expedition XLT 4.6. Coolant leak from rear. Not sure which it is though, my antifreeze coolant is dropping slowly and my ac is leaking oil(guessing from compressor), all in the last week. I stopped using my ac when it started causing white smoke to come from under the hood last week. When I cut it off the smoke stopped. And for the antifreeze part, my heater core was bypassed by previous owner so it's not that leaking. Maybe the hvac heater hose under the intake? Just changed my spark plugs and coils. Also my serpentine belt popped 2 weeks ago and I changed it. Any help is appreciated.

 

[Bedrck47]

Welcome to the forum

 

[docraymund]

Check this out:


http://www.aa1car.com/library/coolant_leaks.htm

 

[tcwaltz]

on the back side it could be the cooling tube leaking where it attaches to the head in the back. You also have hoses back there that could leak as well. Of course the fan will push everything back anyway.

 

[AZ59apacheguy]

on the back side it could be the cooling tube leaking where it attaches to the head in the back. You also have hoses back there that could leak as well. Of course the fan will push everything back anyway.

I second this. I was chasing a small coolant leak for a while. It ended up being a loose coolant hose connection at the back of the passenger side of the engine