I seem to be losing coolant. Issue is I cant find a leak. There is no obvious sign of burning it, no coolant in the oil. This is on my 1992 Flare side with a 5.0li and 150k miles. Anyone have any ideas?

 

If there's no fluid in the oil and no "obvious" signs, I bet its coming from the water pump. It's super hard to find leaks around the water pump, but that seems logical.

Check with the dealer http://bluespringsfordparts.com for the part.

 

Tagging the post, I have similar leak but I think mine is HC as I smell coolant sometimes in the cab but no leaks on the floor, sound familiar?
No obvious leaks on floor of garage, but loosing coolant in reservior

 

theres a small bi-pass hose that comes off the front of the block...squirts onto the hot motor and when the motor is off it stops...drove me nuts till i saw it one day with the motor running pain in the *** to get to. may be your problem also. good luck Its an elbow shaped rubber hose.

 

From the engine or heater core?
Thx

 

I had troubles with the lower intake manifold gasket at right rear pushing the gasket out and leaking a/f into # 4 intake. Replaced gasket on several occasions. Went to a 10 lb cap and it hasnt happened since. Look at # 4 plug and compare to another.

 

 

on the front of the motor above the water pump