Best Way To Desludge This New-To-Me Dodge Dakota w/4.7L V8?

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653
Location
TX & ON
That includes the 3.7 PowerTech redheaded stepchild.
And, btw, any of the .7z aren't genuine Pentastar approved, but rather, they're off brand Daimler/FIAT/Stellantis junk.
Dropped valve seats, fallen rocker arms, bs extra long timing chains/tensioner issues and all that associated Euro-trash Celsius nonsense.
And there's no need to "take the dropped seat heads to the recycler" if one knows how to machine the new seats in but I reckon these days a smartphone app cant give someone the know-how.

I have a friend mechanic that tells me that the 4.7 and the 5.7 have similar problems with valve seats and it happen when they have been overheated and when they are revved over 5K. He works mostly Mopar as that is his specialty. He walked me through his shop and showed me the dropped seat heads that were going to the recycler.
 
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4,920
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Southeast
Several things have been mentioned, ill highlight my favorites. Ive had several older vehicles with various sludge states, including 3 used volvos with their infamous flame trap pcv issues.

1. Any physical cleaning you can do by hand is gold. Screwdriver, wire brush, toothbrush, shop vac.

2. Drive normally with 1/2 can of seafoam in the sump, for a couple of years.

3. Bitog went through a near religious fervor over Kreen a few years back.

4. With any agressive treatments, drop the pan after 7500 and check the oil pickup. 1/2 can of seafoam is not that aggressive.

ive done #1-2 with great results. I try not to overthink it. I did a pan drop once after 1/2 and found zero buildup on the pickup in a chrysler 3.8.
 
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935
Location
United States
That includes the 3.7 PowerTech redheaded stepchild. And, btw, any of the .7z aren't genuine Pentastar approved, but rather, they're off brand Daimler/FIAT/Stellantis junk.
?????

Chrysler rolled out the 4.7 in 1998, a full year before Daimler bought them. In that same year Daimler introduced the M113 V8, one of the most reliable overhead cam V8s of all time.
 
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Messages
653
Location
TX & ON
Anything with them weak-a$$ exhaust manifold studs & substandard valve seats has GOT to have an East German influence.

Likely pre-sales "R&D" by Daimler.

But I jest; I'll remember to put a "laughing face" icon after my sometimes tongue-in-cheek posts.

As far as I'm concerned, the Pentastar & Direct Connection faded when the silly tribal "M" started to define Mopar.

And replacing "Dodge" with "Ram"...absolute sacrilege.

I apologize in advance if I triggered anyone.


?????

Chrysler rolled out the 4.7 in 1998, a year before Daimler bought them. In that same year Daimler introduced the M113 V8, one of the most reliable overhead cam V8s of all time.
 
Messages
635
Location
Kevil,Ky
My 1990 Ranger had the dredded intake manifold water leak into the oil by the lifters. Everything was covered in candle wax, at least that is what it looked like. Gumout spray and kerosene in a spray bottle followed by brake parts cleaner. clean as a whistle. pulled the drain and let it drip overnight. Got it all put back together and then put in 2 quarts of kerosene and 3 of oil and a new filter. Never drove it with that mix but let it fast idle for an hour. Drain and refilled with good oil and filter. Have driven it for 2 years since that repair with no issues. After 5k between changes, oil hardly even gets dark.
 
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