Coolant leak in rear of engine 99 Ranger

wilkcards · Apr 2, 2015

I found a coolant leak in the back of my engine but still can't tell what it is. I keep trying different angles but can't seem to get my camera to the exact leak spot. The video below shows it's location, however.
It only leaks while running, and shortly after until the pressure is relieved.

https://youtu.be/qSY1OZwKyHc?t=52

Please help!

RonD · Apr 2, 2015

What engine is that?

4.0l OHV?

Only thing back there that can leak coolant is the lower intake gasket.

wilkcards · Apr 3, 2015

Yes, it is 4.0

RonD · Apr 3, 2015

Not a technically hard fix, just wrench work.

You will probably need/want to remove the Cam Position Sensor/synchronizer(Black plastic cap in the video) , this needs to go back in exactly the way it came out so it stays timed to the cam shaft.
After removal mark the gear and housing, and don't turn the crank shaft.
You can re-time it if needs be, but less work if you don't need to

My 4.0l doesn't have this synchronizer so can't say if it would be in the way of removing the lower intake, looks tight but there may be enough clearance.

wilkcards · Apr 3, 2015

Thanks, I'm going to rip it apart in the morning and see what happens.

wilkcards · Apr 10, 2015

how do i disconnect this?

alwaysFlOoReD · Apr 10, 2015

I believe that red line your pointing to is a vacuum line. I haven't worked on something that new but I would think it should pull off by hand. Also closely check the frost plugs while you have the head off. I'd replace anyway because it's a bitch to get in there after head installation.

wilkcards · Apr 10, 2015

I've tried pulling on it, but it doesn't want to budge. I can't imagine how I would get it back on either

RonD · Apr 10, 2015

Look like fuel pressure regulator.

Turn it and pull it is just a vacuum hose, the rubber is most likely sticking to the metal tube

Put pliers on it lightly and turn it to break it lose, much like a coolant hose gets stuck to metal

wilkcards · Apr 11, 2015

Thanks, Yes I was being a little too careful and it came off.

I have some extra o-rings, and gaskets that came in a kit. Can anyone tell me where they each go?

Big Jim M · Apr 11, 2015

Most likely for another vehicle! Those kits will fit several vehicles and always have extra gaskets for any one application.
Big Jim

Coolant leak in rear of engine 99 Ranger

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