Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

Coolant leak.

Thread Tools
 
Search this Thread
 
Old Mar 1, 2025 | 09:32 PM
  #1  
Dizbeshawn's Avatar
Dizbeshawn
Thread Starter
|
4wd High
Joined: Jul 2023
Posts: 9
Likes: 1
Coolant leak.

I have a 1996 Ford F350 7.3, and it's been in my family for years. It has original 102,600 miles. I recently took it to my favorite shop, and they told me that my coolant had basically ate a hole through my engine block. They put some Blue Devil radiator and engine block sealer in it, and they said it could have some negative consequences. When I picked it up, it had zero leaks. I haven't driven it in a week, and now it's leaking coolant from the front of the engine. I'm not sure where or why, but has this happened to anyone else? I hate having to replace my short block that has barely even hit 100,000 miles! It seriously makes me want to throw up.
 
Reply
Old Mar 1, 2025 | 09:52 PM
  #2  
Edgethis's Avatar
Edgethis
Lead Driver
15 Year Member
Liked
Loved
Community Favorite
Joined: May 2009
Posts: 6,815
Likes: 708
From: Tobyhanma, PA
That is unfortunate to hear. I'd recommend looking at where it's actually leaking from. Two big culprits on the engine to leak coolant are going to be oil cooler and timing cover.
 
Reply
Old Mar 1, 2025 | 09:56 PM
  #3  
Dizbeshawn's Avatar
Dizbeshawn
Thread Starter
|
4wd High
Joined: Jul 2023
Posts: 9
Likes: 1
Originally Posted by Edgethis
That is unfortunate to hear. I'd recommend looking at where it's actually leaking from. Two big culprits on the engine to leak coolant are going to be oil cooler and timing cover.
The oil cooler was thought to be the culprit when it was leaking before because coolant was running down the oil filter slowly. Now, it's leaking from the front of the engine. They replaced the oil cooler gasket 3 times because they thought it was leaking from there, but one of the awesome mechanics put his finger up through the cooling channel, and that's how he found the engine block hole. I'm hoping it's not going to become a never ending ghost that returns.
 
Reply
Old Mar 1, 2025 | 10:03 PM
  #4  
97-psd's Avatar
97-psd
Logistics Pro
15 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Mar 2007
Posts: 4,586
Likes: 841
From: knoxville, tn
I would suspect the timing cover. Cavitation is real and the timing cover is usually the one that takes the hit for it. Time to do some digging to find the hole
 
Reply
Old Mar 1, 2025 | 10:06 PM
  #5  
Dizbeshawn's Avatar
Dizbeshawn
Thread Starter
|
4wd High
Joined: Jul 2023
Posts: 9
Likes: 1
Originally Posted by 97-psd
I would suspect the timing cover. Cavitation is real and the timing cover is usually the one that takes the hit for it. Time to do some digging to find the hole
If you do find the hole, is there any way to fix it? They're saying that it's hard to find anyone to weld cast iron. I'm thinking I'm going to be putting a short block into this truck.
 
Reply
Old Mar 1, 2025 | 10:20 PM
  #6  
97-psd's Avatar
97-psd
Logistics Pro
15 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Mar 2007
Posts: 4,586
Likes: 841
From: knoxville, tn
The timing cover is a replaceable part
 
Reply
Old Mar 2, 2025 | 01:22 PM
  #7  
Hit Man X's Avatar
Hit Man X
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2002
Posts: 9,554
Likes: 2,034
From: North Texas
Budget a rad and heater core too after that stop leak business.
 
Reply
Old Mar 2, 2025 | 05:14 PM
  #8  
Dizbeshawn's Avatar
Dizbeshawn
Thread Starter
|
4wd High
Joined: Jul 2023
Posts: 9
Likes: 1
Originally Posted by Hit Man X
Budget a rad and heater core too after that stop leak business.
Yeah, it definitely is a possibility.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Mar 3, 2025 | 10:34 AM
  #9  
Hit Man X's Avatar
Hit Man X
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2002
Posts: 9,554
Likes: 2,034
From: North Texas
Heater is quick and easy at least. Keep us posted what you discover. Sadly, I believe timing cover is an engine out job due to oil pan lip.
 
Reply
Old Mar 3, 2025 | 12:20 PM
  #10  
Dizbeshawn's Avatar
Dizbeshawn
Thread Starter
|
4wd High
Joined: Jul 2023
Posts: 9
Likes: 1
Originally Posted by Edgethis
That is unfortunate to hear. I'd recommend looking at where it's actually leaking from. Two big culprits on the engine to leak coolant are going to be oil cooler and timing cover.
Well, I drove it to the shop, and it wasn't leaking when I got to the shop. They're going to look at it and see if it's a cold engine leak, but I'm hoping that it isn't anything too serious. If it is serious though, it's a short block going in. It's going to kill me replacing an engine with such a little amount of miles for a 7.3l PSD.
 
Reply
Old Mar 3, 2025 | 12:22 PM
  #11  
Hit Man X's Avatar
Hit Man X
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2002
Posts: 9,554
Likes: 2,034
From: North Texas
My water pump only leaked when cold.

Get another diag before being bent over again. Heads at this point are clapped too. Budget $10k for someone else to do a long block installed.
 
Reply
Old Mar 3, 2025 | 12:26 PM
  #12  
Dizbeshawn's Avatar
Dizbeshawn
Thread Starter
|
4wd High
Joined: Jul 2023
Posts: 9
Likes: 1
Originally Posted by Hit Man X
My water pump only leaked when cold.

Get another diag before being bent over again. Heads at this point are clapped too. Budget $10k for someone else to do a long block installed.
Honestly, that's what I was thinking on cost. I work 60 hours a week, so I'm not going to be able to do it. It blows.
 
Reply
Old Mar 3, 2025 | 12:34 PM
  #13  
Hit Man X's Avatar
Hit Man X
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2002
Posts: 9,554
Likes: 2,034
From: North Texas
Head wear is all over the place. Mine are clapped at 285k. Some so-so at lower. It is a wild guess. Absolutely no way I would install 100k heads on a fresh engine.

Will you do head studs? Automatic...do converter and shift kit while out, 100% or manual fresh SMF clutch kit. Heavy duty LPOP and HPOP while out. Stock turbo or T4? Inspection for engine harness.

It really becomes wild.

I feel bad for ya
 
Reply
Old Mar 3, 2025 | 12:40 PM
  #14  
Dizbeshawn's Avatar
Dizbeshawn
Thread Starter
|
4wd High
Joined: Jul 2023
Posts: 9
Likes: 1
Originally Posted by Hit Man X
Head wear is all over the place. Mine are clapped at 285k. Some so-so at lower. It is a wild guess. Absolutely no way I would install 100k heads on a fresh engine.

Will you do head studs? Automatic...do converter and shift kit while out, 100% or manual fresh SMF clutch kit. Heavy duty LPOP and HPOP while out. Stock turbo or T4? Inspection for engine harness.

It really becomes wild.

I feel bad for ya
Well, the turbo on it has less than 1,000 miles on it. It was built my Kent Barnes. My injectors and glow plugs have 2,000 miles. The clutch has probably 8,000 miles or less. It's a stage 1, I think? It's definitely upgraded. The stock one **** the bed. I put IDP up pipes on it less than 1,000 miles ago. It has new cnc intake plenums. This isn't my daily driver. If it needs a new long block, it's not going to be able to have a warrantee because there's no way they will allow any of my modifications or Hydra chip with my tunes.
 
Reply
Old Mar 5, 2025 | 10:27 AM
  #15  
Hit Man X's Avatar
Hit Man X
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2002
Posts: 9,554
Likes: 2,034
From: North Texas
A few guys have mods on their reman long blocks without issue.
 
Reply



All times are GMT -5. The time now is 09:04 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE