MY 03 MUSTANG GT AT LOW RPMS NO MATTER THE TEMPERTURE THERE IS A TAPPING NOISE COMMING FROM THE ENGINE, AND IT SOUNDS LIKE THE VALVE TRAIN ON THE PASSENGER SIDE. WHAT CAN I DO?? BECAUSE IT IS DRIVING UP THE WALL [:-]

 

do you have enough oil in it...maybe the valves tapping?

 

OILS GOOD....IF TRYED LIGHT WEIGHT AND HEAVY WEIGHT OIL, BUT NO CHANGE...