4.0 tear down / cylinder head replacement

[Quartermile]

The truck started to heat up and miss on the highway, so I pulled over. Open the hood and no coolant in the resivoir. "Oh shit" Towed it home and opened the radiator, it was low. Noticed cream like liquid dripping from the airbox, took it apart, and there was oil/coolant mix spewed everywhere. Took the engine apart down to the block today, going to need new heads. Comments welcome, here's the pics:

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[BRUTUS_T_HOG]

that valve cover is the worst i have ever seen.

 

[Big Jim M]

I'm thinking about the bottom end .
Big JIm

 

[Sasquatch_Ryda]

Ditto...bearings really don't get along with coolant.

 

[alwaysFlOoReD]

Ditto...bearings really don't get along with coolant.

x2
Richard

 

[Psychopete]

that valve cover is the worst i have ever seen.

My 2.9L was like that when the head cracked.

 

[Quartermile]

Taking the oil pan off today and attempting to clean this junk out with old solvent. Wish me luck

 

[jhammel85]

I'm thinking about the bottom end .
Big JIm

^ I'm thinking the same. I've NEVER seen one that bad before...That Valve Cover looks like custard.

 

[ChrisHelvey]

In chemistry terms it would be an emulsion - two substances that don't usually mix, put together in just the right temperature to make....a new face cream! ("RangerCream") Sell it at outdoor sport stores.

Seriously, sorry about your breakdown. What a drag. A reminder to wear solvent-proof gloves for your health.

Good luck.

 

[Quartermile]

A reminder to wear solvent-proof gloves for your health. .

How will my cuts get cleaned then?

 

[Quartermile]

Update: Cracked 4-5-6 head, bad intake gasket. Valves are loose in the guides, and the seat is worn down into the heads, margins of valves are far beyond normal on exhaust and worn more than normal on intake. Ordering new heads and gaskets tonight, then going to work on taking the oil pan off and cleaning that

 

[lifeissomething]

That's horrible... How many miles? What the hell did you do to that truck?

 

[Quartermile]

That's horrible... How many miles? What the hell did you do to that truck?

73,337 and just drove it, pulled the boat about a thousand miles. I'm the second owner, so I dont know how well it was taken care of the first 40k

 

[Quartermile]

Update . . . came in for supper finally, got the oil pan off and cleaned up. Gasket material and crud cleaned off block, valve covers, rockers, push rods, and bolts. Took exhaust manifolds off the old heads, and had to use the torch to loosen most of the studs. Basically ready to reassemble everything when the parts get here after a last check for foreign material entering between now and then. Going to dump a gallon or two of solvent through it before new oil. Think I'll do an oil change after running for 5 or 10 minutes after reassembly, then another oil change after a few hundred miles, then see how that oil looks and go from there.

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[Nhaz]

I used to see that mixture and colour ALL the TIME when I was servicing the large outboard motors.

The lower end seals on those things failed all the bloody time. And it was usually the drain plug seals. various motor brands.

I haven't see it in a engine though. So That's new to me =>