Coolant Injestion

Glenn Owner/Technician New Sharon, Maine Posted   Latest  
Updated
Driveability
2009 Ford Edge SE 3.5L (C) 6-spd (6F50)
Coolant In Engine Oil

Pressure tester on system and no leaks at weep hole or exterior that I can see. Can this be a water pump failure with no external leak or is there another common failure for this engine? Test procedure?

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Michael Mobile Technician
Clinton, Utah
Michael Default
 

My understanding is that there is an oil cooler problem with these models causing cross contamination.

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Chris Technical Support Specialist
Commack, New York
Chris Default
   

Oil pressure is higher than coolant pressure with the engine running, With no oil in the cooling system suspect (not a guarantee) that the coolant entry is into the crank case not a pressurized component. The exception to this may be that the cooling system remains under pressure when the engine is off and during hot soak conditions may cross-bleed to a oil passage or through a cooler. If you…

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Billy Mechanic
Deming, New Mexico
Billy Default
 

Majority of coolant into engine oil I have seen is from front timing covers, Not knowing the makeup of this engine I cannot state for sure but I have seen a lot of 3.0 fords have the block to timing cover gaskets fail due to stretched mounting studs leak coolant into the pan. Same is true for 22re Toyota due to timing chain stretch. Oil coolers go the other way due to 60 psi oil pressure and 15…

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Caleb Technician
Mishawaka, Indiana
Caleb Default
 

I personally have never heard of or seen oil cooler issues on these engines. But these guys are a lot smarter than me so I would trust them, I'm not being sarcastic either. It is totally possible for the water pumps to leak into the oil without leaking out the weephole. I personally have done a couple 3.5 water pumps for this issue. It's very common. You can buy the cam holder literally anywhere…

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Caleb Technician
Mishawaka, Indiana
Caleb Default
 

Also the coolant does not run thru the timing cover on this engine. There are no timing cover gaskets either, just silicone.

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Marlin Technician
Estacada, Oregon
Marlin Default
 

It can be from the water pump, which is mounted to the block behind the timing cover. Not the best design. We had one a while back with this scenario, into which someone added copper sealer. It had previously been leaking from the weep hole, but that apparently got plugged. By the time we received the vehicle to determine what was going on, some of the sealer was embedded into the camshaft…

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Martin Diagnostician
Burleson, Texas
Martin Default
 

The weep hole for the water pump exits above the ac compressor. It will usually clog and leak coolant into the crankcase. Depending how much has leaked in it is possible to have engine damage.

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Glenn Owner/Technician
New Sharon, Maine
Glenn Update
 

Thank you all for your information its much appreciated.

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