One the 3.9L V6 and 5.9L V8 the carbon buildup on the top of the piston is common. As the buildup increases with mileage and over time, symptoms may vary from light ticking, to ticking/hammering, to hammering/knocking noises. Fuel injector cleaner often solves the problem.
Carbon buildup at top of piston may cause noise on Jeep Grand Cherokee
Average mileage: (–)
Engine affected: 5.2L V8
7 people reported this problem
0 people shared problem details
noise is only in four wheel drive,has a clicking and popping noise coming out of left side cant...
I just purchased a 04 grand cherokee SE 4.0L. I never owned a jeep, but they seem to be a bit n...
where the ac/heating control panel in the middle what is that noise
Engine has tapping noie. sounds like valve lifters
4.0L 6 CylinderDue to misfires, you may experience a loss of power when accelerating between 50...