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weird coolant leak

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Old Jan 2, 2025 | 09:11 PM
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ggenovez's Avatar
ggenovez
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weird coolant leak

Hi all,

I've been chasing a coolant leak for several weeks. Put in some dye and pressurized the system and, where I thought it was coming from the coolant bypass is actually coming from just below that. This is the view from under the truck, and below the bypass.


What is this part? it's a metal cover with a bolt holding it in place. I don't want to take it apart and then be down for a week. Any idea what it takes to fix this?
 
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Old Jan 3, 2025 | 03:42 PM
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That's a block off plate.
Remove bolt then pry it off, replace o-ring, re-install. Drain coolant first.
 
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Old Jan 3, 2025 | 04:29 PM
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Someone said that might be an EGR block off plate. There shouldn't bee coolant in that right?
 
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Old Jan 3, 2025 | 04:33 PM
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Yes there is coolant behind it.
 
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Old Jan 3, 2025 | 04:34 PM
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EGR COOLER BLOCK OFF PLATE.
 
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