[TrailLeadr]

hello everyone. i dont know if i am doing this right but i have a strange ticking noise coming from my engine compartment. the thing that confuses me is that this ticking noise only happens when the truck first starts up in cold weather than the noise goes away after a while. does anyone know what this noise is, is it harmful, and can it be fixed?? any help would be great

thanks alot
mr.copenhagen

What else can you tell us about the truck? (ie. year, make, model, engine size, mileage)