Curious if this in lower intake gaskets? It’s leaking coolant and I need a second opinion.

[KINGER_4.0]

 

[RonD]

Welcome to TRS

Can't see squat

But if its a 4.0l OHV(1990-2000) then yes, the lower intake can leak at any of its 4 corners
The head is cast iron, the intake is aluminum
When you have two different metal types with a fluid flowing between them it can cause corrosion of the weaker metal, aluminum in this case and ALSO the gasket between them
If you change coolant on time that won't happen, green coolant needs to be changed every 2 years

Usually is the front passenger side or rear drivers side corners

Coolant passages are only at the corners, nothing on the edges

 

[KINGER_4.0]

Welcome to TRS

Can't see squat

But if its a 4.0l OHV(1990-2000) then yes, the lower intake can leak at any of its 4 corners
The head is cast iron, the intake is aluminum
When you have two different metal types with a fluid flowing between them it can cause corrosion of the weaker metal, aluminum in this case and ALSO the gasket between them
If you change coolant on time that won't happen, green coolant needs to be changed every 2 years

Usually is the front passenger side or rear drivers side corners

Coolant passages are only at the corners, nothing on the edges

Yea sorry it’s screenshot of a video I took since I’m not aware if I can I import a video in

 

[rhekman]

Yes, there's a coolant passage from the head through the back of the intake manifold, and that gasket can leak. Don't ignore it, or coolant leaking down the back of the motor can ruin the throwout bearing and/or clutch slave cylinder (ask me how I know).