Wanted to see if anyone had any ideas on where the coolant is coming from. It’s dripping pretty good directly under the motor from between the tranny and motor. Heater core hoses aren’t leaking

 

Head gasket from one or both cylinders on the rear of the motor is my guess

 

my first thoughts too but the coolant is fresh light green

 

So was mine when the pass side let go

 

Yikes

 

Before everyone gets you freaked out check the heater core hard line that goes to the intake manifold. You can see it pretty easily as it is positioned right behind the alternator. Easy fix if that’s the culprit. Remove the alternator and you can get at it pretty well. The o ring can deteriorate and cause the leak, the coolant leaks out and runs to the back of the motor on the valley pan and down the back of the motor.

 

I agree with Frank4. Don't freak out. Another VERY common source of coolant leaks is the throttle body heater gasket. Even though it's toward the front of the engine, coolant leaking from there can flow to the back and drip down.

 

That has to be a gnarly throttle body leak since it drips right on the heads and evaporates very quickly in my experience.

 

Buy a cheap carburetor pressure testing tool that goes to at least 15 psi. Bike pump with gauge works too if you can adapt it to a ****** fitting. Same with blood pressure test pump.

Then get some vinyl tubing that fits snugly into your coolant bleeder screw hole. Pump 15 to 18 psi. If she leaks you'll not hold pressure. You'll also see coolant escaping in most cases.


Good tool to take before buying a disco.

 

More typically a TBH leak can run along the valley between the head and the intake and drip off the back of the engine.

Or, you can just borrow a cooling system pressure test kit from one of the auto parts stores.