I have a 2002 XJ8 4.0 L I have a coolant leak and cant locate. Its not a big one but does drip on ground. It drips on the ground like right below the gas pedal....not inside the car but outside. Any ideas? Thanks in advance.

 

First the best way to find a coolant leak is by a pressure test. Most radiator shops can pressure up the system with the engine off, or if you want to do it yourself, Harbor Freight has a pressure test kit that actually has an adapter that will fit the expansion tank. The pressure test with the engine off and cold will reveal the area of the leak.
Short of the pressure test you can check the expansion tank for leaks, Next place would be the octopus hose under the tank and inboard toward the throttle body. The last possibility would be the heater feed and return hoses that run beneath the manifold. Altogether that gives you a dozen possible areas for a leak.
Such is the reason for the static pressure test being best.

 

Thank you...I was curious about harbor freight. Thanks!!!

 

Sounds like the tank area -- have you removed the covers?

If it's coolant -- wiping around with a paper towel will show the color. There are quite a few connections in that area.