Whenever my truck has been running for more then about a min, it will start to smell like burning radiator fluid. I have already changed the hose and did a clean out. I can't figure it out... I know there is a leak somewhere because I can see random white liquid drips (I will get a picture of it) and build up of coolant (or some yellowish/clear liquid) where the truck has been sitting. Also the truck idlies very fast and sounds like it is studdering with a weird ticking noise. Although it will start and run fine. Any ideas?