coolant leak

[86rocco]

Hey all,

I have a 1990 Ranger 4.0 that started leaking coolant. Initially I thought it was the water pump, but I replaced it and now it has a new pump, gasket, and torqued. My thermostat is also newer (done last spring).

As I get further into it, it looks like the leak is coming from the motor. Behind where the thermostat housing bolts on. I haven't been able to get under and really see yet. Maybe an inspection mirror will reveal more. Is there a sensor or anything that could be leaking or am I looking at pulling motor apart and replacing a gasket or two?



Thanks for any input and ideas. Could it be the lower intake manifold gasket? That is somewhat where I am leaning, but am unsure.

 

[RatDog8o8]

Not 100% sure......if that's the head on the left, and the intake at top right......venture a guess as to either the intake gasket or a head gasket. Hopefully the intake!

 

[86rocco]

on the upper right is the lower section of the intake.

I can't see in there well enough to know but there isn't any coolant in oil or oil in coolant so I am hopeful it isn't the head gasket.

I've just never had this motor apart that far and well haven't had to really work on this motor ever so I guess now is the time I get to start

 

[RatDog8o8]

Had a similar issue long ago with the other half's Jeep XJ 2.8. Turned out to be the intake and not the head. Hope it all goes well!

 

[86rocco]

Just to update this.

It ended up being the lower intake gasket. It has been running strong since I replaced it.

The job wasn't too daunting. Quite a lot of cleaning was required as there was a ton of dirt and grime and what-not. It was easy to tell where the leak was coming from once I pulled the intake off. The gasket was toast!

Thanks for the replies, help, and letting me bounce ideas around!!