Manifold coolant leak on a 2012

[AzteCypher]

So I'm pretty sure we have a manifold coolant leak on our 2012. Haven't been able to determine yet if it's the manifold itself or if it's the bypass tube underneath the manifold. Is this "normal" on a Expy with 148K miles on it? Anyone have any experience doing this work to ascertain the number of hours and $$$ this will take?

My thoughts were to replace the manifold, radiator hoses (they're original), thermostat, all gaskets and the coolant bypass tube since I'll have to remove the manifold to do any of the work. I also thought about doing the plugs while I'm at it. Thoughts, tips or suggestions are welcome. Thanks!

 

[AzteCypher]

So I believe the coolant is leaking from where the crossover pipe meets the manifold. Either the gasket is torn or the manifold deteriorated at this location.



I'm assuming I can reuse the crossover pipe as the part number I'm finding doesn't seem to include the crossover pipe. Does anyone know otherwise?

Ford Part No.: 9L3Z-9424-A

https://www.fordpartsgiant.com/part...odel=Expedition&Year=2012&Submodel=&Filter=()

 

[Brennan DeRaad]

Did you ever resolve this issue? I have the same leak on my 2010 and was just wondering how it went.

 

[AzteCypher]

@Brennan - Apologies for never responding as I quit checking the forums. It wasn't anywhere near as bad as I was expecting as I only had to swap out the thermostat and the corresponding gaskets for the crossover pipe. I thing I did mess up was I ended up breaking the heads off of one of the bolts that tightens down the cross over pipe. I was able to remove the pipe and take out the remainder of the bolt with vice grips. Found another replacement bolt with the same thread pattern in my stash and finished up without any further issues.

 

[Dennis_H]

The 2010 crossover pipe is under the intake, not on top... I would have replaced mine last month, but took it in since I didn't want to pull the whole intake. Then at the same time, replaced water pump, alternator, PCV hose, etc.

 

[AzteCypher]

Oooh... that does stink. Sorry to hear about that. Good call on replacing the ancillaries.