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4.0 OHV coolant leak, intake or head gasket?


DP98xlt

New Member
Joined
Jul 30, 2025
Messages
1
City
Malvern
State - Country
PA - USA
Vehicle Year
1998
Vehicle
Ford Ranger
Drive
4WD
Engine
4.0 V6
Transmission
Automatic
Total Lift
Stock
Total Drop
Stock
Tire Size
235/75R15
Hello,

98, 4.0L OHV, 144k miles with little to no history. I Drove it 2 miles home.

Previous owner said it has an overheating problem & the last shop said possible head gaskets. What are the odds between plastic upper/aluminum lower intake manifold gasket, or head gasket on these motors ?

Hard to pinpoint exactly but it appears to be leaking driver side lower intake gasket with Little to no smoke coming from exhaust.

Other known issues ?

The attached photo is where the leak is coming from, was sent sideways for some reason.

Thanks for your time.
 

Attachments

  • IMG_7119.jpeg
    IMG_7119.jpeg
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Last edited:
Early OHV 4.0 is famous for leaking intake gasket. Usually right by the thermostat housing. They are also known for cracking heads if overheated. Soo.. 50/50?
 

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