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2011 3.5 ecoboost coolant leak

Old 04-01-2023, 03:15 PM
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Default 2011 3.5 ecoboost coolant leak

HI everyone. I've got a coolant leak in this truck coming out of this port in the video. Where does this originate from?
The view in the video is from the inspection port in the splash guard drivers side right at back of motor where the trans computer is.


Old 04-01-2023, 09:30 PM
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If that view actually shows the front diff cover the “port” looks suspiciously like a rear drain on an oil filter tray.

If correct, the leak likely is toward the front of the engine near or above the oil filter. Oil cooler, water pump, maybe a hose connection?
Old 04-01-2023, 11:14 PM
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Common fails are the elbow off the bottom of the overflow tank. There is a tregasskiss kit avail. Or if its the same as the coyote, the Y off the waterpump, the o-ring fails.
Old 04-02-2023, 11:50 AM
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Yes, I believe that is the front dif cover in the video. I think you may be right. I'll take off the intake piping and see what I can in there. Two people on separate sub reddits were saying it's the heater core but wouldn't that just come out the condensate drain? Also I have no coolant smell in the cabin at all.
Old 04-02-2023, 11:51 AM
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Good call. I'll take off some things and look in that area further.
Thanks
Old 04-02-2023, 01:02 PM
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I think that’s likely coming from the water pump shaft seal. If so that area can be inspected from underneath. Remove the rubber section attached to the front of the splash guard, and the four bolts fastening the splash guard. Pump bearing might be loose enough to wiggle it’s pully around a bit. We’d like to see another black light video of what is found.

Last edited by Barry_Vee; 04-02-2023 at 01:05 PM.
Old 04-02-2023, 03:17 PM
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So I took the covers off and ran the truck looking under it. I'm not seeing coolant at the water pump but I did see coolant at the upper radiator hose. The thing is it's not leaking now!!! I don't know what's the deal today but no active drip like yesterday. I see coolant on lots of things nowhere near the upper hose but nothing that has coolant running through it but the upper radiator hose. Also yes, It has plenty of coolant in the system. If it's just the hose or clamp I'll be thrilled but I'm not certain it's that simple.

Old 04-02-2023, 04:59 PM
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Duplicate

Last edited by Barry_Vee; 04-02-2023 at 10:41 PM.
Old 04-02-2023, 05:01 PM
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Originally Posted by bfeils;[url=tel:7400916
7400916]So I took the covers off and ran the truck looking under it. I'm not seeing coolant at the water pump but I did see coolant at the upper radiator hose. The thing is it's not leaking now!!! I don't know what's the deal today but no active drip like yesterday. I see coolant on lots of things nowhere near the upper hose but nothing that has coolant running through it but the upper radiator hose. Also yes, It has plenty of coolant in the system. If it's just the hose or clamp I'll be thrilled but I'm not certain it's that simple.

https://youtube.com/shorts/KnoMu-O5zfA?feature=share
That is a surprise. Maybe take along a couple gallons of distilled water so not to get stranded until the leak is found. What UV light are you using? It does a nice job.
Old 04-02-2023, 06:35 PM
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Originally Posted by Barry_Vee
That is a surprise. Maybe take along a couple gallons of distilled water so not to get stranded until the leak is found. What UV light are you using? It does a nice job.
Yeah I let it run for at least 30 minutes and couldn't get a drip. This is the light I use. Normally it's my scorpion finding light haha. It's incredibly bright. The batteries in it are pretty old so it's brighter normally.
Thanks for the insight on this.
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