Agree, check the upper hose. May not have seated properly, or the clamp wasnt installed correctly. Coolant could be spraying out of it, and getting on the front of the intake. Other possibiliy, a leak in the radiator that is blowing back onto the front of the engine.
If that checks out, there is a heater pipe under the front of the intake, with an O-ring seal that seats into the bottom of the lower intake manifold. They tend to leak on older higher mileage units. Next, the bleeder screw, which is in the top of the lower intake, next to the front of the plenum. Third, the lower intake gasket itself could be leaking. In these three cases, you'll have coolant running down the sides of the transmission, where it meets the engine, as there is a drain hole for the intake valley above the trans. Check the drive belts too, and see if there is any antifreeze on them, a water pump or radiator leak could be dripping or blowing onto the belts, causing them to sling coolant around.
Best bet is to have the cooling system pressure tested, that should make the leak known instantly.
Last edited by Daytrepper; 01-05-2010 at 09:49 AM.