In the past weeks Ive notice puddles of "black water" on the garage floor were my truck sits, looking closer at it looks to be soot mixed with water. I've notice it twice so far but I have been having the truck for 8 months, and all of a sudden it' showing up. I've also notice a slight very very faint ticking at start up ( when it'ss ideling at higher rpms) and when I rev the engine the ticking increases. can not here it while driving are with the windows up. Any Doctor's in the house??