Uh oh! Confirm my fears or lift my spirits

1Sinner

Member
Steel Soldiers Supporter
56
33
18
Location
Edwards, California
So I've been fighting a couple small coolant leaks here and there. First was a freeze plug, then one of the head transfer manifolds was leaking from a gasket and an old hose along with the thermostat housing weeping. Got to take it for a spin tonight to get it up to temp and get home to inspect for leaks....

I had noticed the wetness at the front of the block on the lip between the block and the head, along with some oily wetness down the side of the block by the motor tag and just behind the tag. I also noticed a few bubbles of green (antifreeze) at the front of the head. I had believed these were due to the other Previously mentioned leaks. After coming back tonight, everything was fresh with no leaks from other areas.

I believe this to be a failing head gasket. Is it worth attempting a retorque on the heads? Or am I looking at a top end teardown.

No water in oil, no oil in radiator.

Pics for reference. Sorry it was dark outside.
 

Attachments

Menaces Nemesis

"Little Black Truck" Conservator
Steel Soldiers Supporter
330
230
43
Location
Denver, Colorado
Looks just like mine did before I replaced the head gaskets, which is the same way lots and lots of otherwise perfectly functioning multifuels do. Taken from one of my recent posts...

"This is often called "wetting the block". Multifuels are known for doing this, lotsa folks drive deuces that are doing this, some even with brand-new, new-style head gaskets, and it's not necessarily a problem unless you're getting oil in the coolant, coolant in the oil, or it's blowing compression to the atmosphere. Many people will not change head gaskets for merely wetting the block, so, it's up to you what you want to do."

Your truck has the old weep-tab head gaskets on it now. The new-stlye gaskets with integral fire rings are said to seal much better. From what I've gathered, whether installing new-style gaskets will end your block wetting forever, or you'll never have to replace them again, isn't guaranteed. So, it's a matter of what you're comfortable with. Are you okay with letting the current gaskets go until/if they blow? or would you feel more comfortable replacing them with new-style gaskets (which may still leak and need replaced in the future also).
 
Last edited:

Mullaney

Well-known member
Steel Soldiers Supporter
1,179
1,423
113
Location
Charlotte NC
So I've been fighting a couple small coolant leaks here and there. First was a freeze plug, then one of the head transfer manifolds was leaking from a gasket and an old hose along with the thermostat housing weeping. Got to take it for a spin tonight to get it up to temp and get home to inspect for leaks....

I had noticed the wetness at the front of the block on the lip between the block and the head, along with some oily wetness down the side of the block by the motor tag and just behind the tag. I also noticed a few bubbles of green (antifreeze) at the front of the head. I had believed these were due to the other Previously mentioned leaks. After coming back tonight, everything was fresh with no leaks from other areas.

I believe this to be a failing head gasket. Is it worth attempting a retorque on the heads? Or am I looking at a top end teardown.

No water in oil, no oil in radiator.

Pics for reference. Sorry it was dark outside.
Also have to remember that the fan blows anything fluid toward the back of the motor. A leak on the thermostat housing could as easily as not be the problem. Stranger things have happened before. With no "chocolate pudding" on the dipstick or oil filler cap - you either caught it early - or maybe the easier, cheaper things are a good place to start.
 

1Sinner

Member
Steel Soldiers Supporter
56
33
18
Location
Edwards, California
Looks just like mine did before I replaced the head gaskets, which is the same way lots and lots of otherwise perfectly functioning multifuels do. Taken from one of my recent posts...

"This is often called "wetting the block". Multifuels are known for doing this, lotsa folks drive deuces that are doing this, some even with brand-new, new-style head gaskets, and it's not necessarily a problem unless you're getting oil in the coolant, coolant in the oil, or it's blowing compression to the atmosphere. Many people will not change head gaskets for merely wetting the block, so, it's up to you what you want to do."

Your truck has the old weep-tab head gaskets on it now. The new-stlye gaskets with integral fire rings are said to seal much better. From what I've gathered, whether installing new-style gaskets will end your block wetting forever, or you'll never have to replace them again, isn't guaranteed. So, it's a matter of what you're comfortable with. Are you okay with letting the current gaskets go until/if they blow? or would you feel more comfortable replacing them with new-style gaskets (which may still leak and need replaced in the future also).
After chatting with a few people, going to attempt a hot torque before going further as I just don't want to spend the money on parts right this second, as I had just changed the oil and all filters. If I can get by for a little while with a retorque until I can gather the parts (better studs, new style gaskets, oil, filters, etc.) and budget for a head rebuild (if needed when I pull them off) or find a full gasket kit and do a complete reseal on the engine if I'm going to dig that deep anyway.
 

1Sinner

Member
Steel Soldiers Supporter
56
33
18
Location
Edwards, California
Also have to remember that the fan blows anything fluid toward the back of the motor. A leak on the thermostat housing could as easily as not be the problem. Stranger things have happened before. With no "chocolate pudding" on the dipstick or oil filler cap - you either caught it early - or maybe the easier, cheaper things are a good place to start.

It was definitely weeping out of the thermostat housing, I had just overlooked the possibility that it was leaking out of the head due to the nature and location of the leak.
 

cattlerepairman

Well-known member
Steel Soldiers Supporter
2,574
870
113
Location
NORTH (Canada)
After chatting with a few people, going to attempt a hot torque before going further as I just don't want to spend the money on parts right this second, as I had just changed the oil and all filters. If I can get by for a little while with a retorque until I can gather the parts (better studs, new style gaskets, oil, filters, etc.) and budget for a head rebuild (if needed when I pull them off) or find a full gasket kit and do a complete reseal on the engine if I'm going to dig that deep anyway.
Great time to set valve clearances as well!

You made me smile when you mentioned "engine reseal"...doing the head gaskets is one thing and I admire the "disciplined" people that can do just that and button everything back up.

I am so in danger of falling into the "while I am in there and have this apart, I can also do...." - trap. Heads off, oil pan off....clearly you do rings..and bearings...maybe new pistons....maybe LDS pistons and liners....ummmmmmmm :)
 

1Sinner

Member
Steel Soldiers Supporter
56
33
18
Location
Edwards, California
Great time to set valve clearances as well!

You made me smile when you mentioned "engine reseal"...doing the head gaskets is one thing and I admire the "disciplined" people that can do just that and button everything back up.

I am so in danger of falling into the "while I am in there and have this apart, I can also do...." - trap. Heads off, oil pan off....clearly you do rings..and bearings...maybe new pistons....maybe LDS pistons and liners....ummmmmmmm :)
For sure. I'll be checking valves and everything else. I'm horrible at fixing "just one thing" I want my stuff done right. Last time I dug into my 7.3 it cost me 8k. Lol. New turbo, new injectors, 4 line fuel feed, fuel bowl reseal, billet intake plenum. New gaskets, sensors, seals. But its a 2001 and doesn't leak a drop of oil or burn any.
 

Mullaney

Well-known member
Steel Soldiers Supporter
1,179
1,423
113
Location
Charlotte NC
For sure. I'll be checking valves and everything else. I'm horrible at fixing "just one thing" I want my stuff done right. Last time I dug into my 7.3 it cost me 8k. Lol. New turbo, new injectors, 4 line fuel feed, fuel bowl reseal, billet intake plenum. New gaskets, sensors, seals. But its a 2001 and doesn't leak a drop of oil or burn any.
I understand that concept... Going to replace a simple set of spark plugs on something and it ends up getting a new cap, button, wires and anything else that looks like it might need attention. Always from $20 to $200 in a flash! Or more.

Still, nothing beats fixing it right...

.
 

pitpawten

Member
175
19
18
Location
Centreville, Maryland
For sure. I'll be checking valves and everything else. I'm horrible at fixing "just one thing" I want my stuff done right. Last time I dug into my 7.3 it cost me 8k. Lol. New turbo, new injectors, 4 line fuel feed, fuel bowl reseal, billet intake plenum. New gaskets, sensors, seals. But its a 2001 and doesn't leak a drop of oil or burn any.
Does this 2001 happen to be an excursion with a 7.3 in it?
 

WillWagner

Loose Nut
Super Moderator
Steel Soldiers Supporter
7,747
421
83
Location
Monrovia, Ca.
To me, It looks like the hose from the WP to the intake manifold is leaking....see the white streaks on the hose and the wet at the upper part of the hose? That indicates a leakat the wet and the streaks indicate the coolant is drying as it runs down the hose. Yes, old style head gaskets are....well, they are '30s technology, leave a bit to be desired. If it were me, just to make sure it is the gasket, I would let it cool and go over all the clamps and mounting hardware then give it a test flog. Simple things first and yes, the fan blows that stuff everywhere. Check your radiator cap pop off. NORMALLY they fail to a lower pressure, but if it fails so the vent doesn't vent, you will push coolant from all sorts of places.
 

1Sinner

Member
Steel Soldiers Supporter
56
33
18
Location
Edwards, California
To me, It looks like the hose from the WP to the intake manifold is leaking....see the white streaks on the hose and the wet at the upper part of the hose? That indicates a leakat the wet and the streaks indicate the coolant is drying as it runs down the hose. Yes, old style head gaskets are....well, they are '30s technology, leave a bit to be desired. If it were me, just to make sure it is the gasket, I would let it cool and go over all the clamps and mounting hardware then give it a test flog. Simple things first and yes, the fan blows that stuff everywhere. Check your radiator cap pop off. NORMALLY they fail to a lower pressure, but if it fails so the vent doesn't vent, you will push coolant from all sorts of places.
Thanks Will. Already checked that, went over all clamps. The wet residual on the water pump housing is from before I changed the thermostat. It's definitely coming from between the block and head. Dried it and wiped it down before the test drive, freshly wet afterwards.
 

WillWagner

Loose Nut
Super Moderator
Steel Soldiers Supporter
7,747
421
83
Location
Monrovia, Ca.
Another thing, the copper vent pipe coming out of the radiator neck can crack at the solder joint and blow stuff everywhere. If coolant or oil for that matter, gets blown across the engine it will seep under the heads/gaskets/between the deck and gaskets, and make it look like a leak due to the bubbling as it warms up. A good dousing in simple green and wash off can stop that and give you a clean slate to look at.
 

Mullaney

Well-known member
Steel Soldiers Supporter
1,179
1,423
113
Location
Charlotte NC
I was looking for something else and came across a 2010 post about head gaskets. TONS of information!

 

1Sinner

Member
Steel Soldiers Supporter
56
33
18
Location
Edwards, California
I was looking for something else and came across a 2010 post about head gaskets. TONS of information!

Thanks!
 

cattlerepairman

Well-known member
Steel Soldiers Supporter
2,574
870
113
Location
NORTH (Canada)
Yes likely, but it can run like that for a looong time - as long as there is no oil entering the coolant. You ought to have bought yourself sufficient time to collect the info, tools and supplies to eventually do the head gasket(s). How loose/inconsistent were the head nuts?
 
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website like our supporting vendors. Their ads help keep Steel Soldiers going. Please consider disabling your ad blockers for the site. Thanks!

I've Disabled AdBlock
No Thanks