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Hi guys, I have a 96 7.3 with a coolant leak coming from somewhere on the driver's side of the engine, towards the front. It doesn't appear to be coming from anywhere on the top of the engine, or any of the coolant hoses, or the water pump weep hole. It is running down what looks like the back/underside of the waterpump, and collecting on the driver side battery ground block. Both fuel lines are also routed through this ground block. I have felt the fuel lines and it doesn't seem to be running down them. Also doesn't seem to be running down the battery cable or any of the coolant or PS hoses. I will attach a picture of where it's collecting. It is continuing to leak with the engine off and sitting, has been sitting for a week now. I'm trying to figure out where it is coming from and how to stop the leaking! I'm concerned it will eat through my battery cables and cause a short.

Also, it started after I had it in the shop for an oil leak and they power washed the engine bay. Could that have caused this?

Thanks in advance for the help.

It appears to be coming from this dark space up above, labeled as 1. There is a little ledge up there and it feels wet around the gasket where what I believe is the back of the water pump meets some other piece. It is collecting at 2, which is the ground block.
20210503_175831.jpg
 

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USB snake cam and go looking for the source -- it is really hard to tell sometimes
also a pressure tester on the cooling system may force more coolant out where you can see it easier

A good light and a mechanics mirror may do the job

you can use a fluorescent dye in the coolant and the "special" light to look for leaks
 

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Check the thermostat housing flange. The housing is pretty thin and can have problems sealing. The water pump bolts to the front cover. I'm assuming its not leaking from the oil cooler or front oil cooler header adapter which IIRC is a little farther aft of your leak. Cheers!
 

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If you replace the thermostat, use one of the premium gray (low acid) silicones -- check my signature block for a real good type
 
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