Help identifying
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6th Gear
Joined: Oct 2025
Posts: 6
Likes: 0
Help identifying
Coming off the radiator. Small leak coming out of the left side of the rubber gasket
There is a leak somewhere in the cooling system but this seems to slow to be the culprit.
What’s the best way to find where the leak is coming from. Takes about two days for the resivoir to empty
There is a leak somewhere in the cooling system but this seems to slow to be the culprit.
What’s the best way to find where the leak is coming from. Takes about two days for the resivoir to empty
Logistics Pro
Joined: Aug 2014
Posts: 3,547
Likes: 845
???
What year, make, model, etc.
Where you located?
That looks like trans line leakage. Probably in cab heater core small leak, and if your in a humid climate, you wont notice it.
What year, make, model, etc.
Where you located?
That looks like trans line leakage. Probably in cab heater core small leak, and if your in a humid climate, you wont notice it.
Last edited by wwhite; Oct 24, 2025 at 11:55 PM.
Hotshot
Joined: Jun 2015
Posts: 12,766
Likes: 2,420
I don’t see a rubber gasket so I’m not sure what you’re looking at?
Top picture is hard to tell if the side tank has a leak running down from near the top or if it is a shadow.
Bottom picture looks like someone patched together the transmission cooler line with a piece of rubber hose.
Top picture is hard to tell if the side tank has a leak running down from near the top or if it is a shadow.
Bottom picture looks like someone patched together the transmission cooler line with a piece of rubber hose.
Lead Driver
Joined: Sep 2002
Posts: 9,476
Likes: 2,009
From: North Texas
Air inlet to box should be a gasser V8. I had a slow *** coolant loss for years on my 302, ended up timing cover to block gasket failed. With a truck around 40 years, suspect all unless documented repaired.
Yes, that patch job is comical at best. You need to purchase new lines if available, find clean used, or make some. Advise to add external ATF cooler if not currently equipped
Yes, that patch job is comical at best. You need to purchase new lines if available, find clean used, or make some. Advise to add external ATF cooler if not currently equipped
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whenry912
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
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