If you're experiencing problems with the timing belt, it's likely not a tensioner adjustment issue. Instead, you should consider:
* A worn or failing tensioner: The tensioner itself might be malfunctioning. This usually requires replacement, not adjustment. A failing tensioner often makes noise (clicking, whining).
* A worn timing belt: A worn belt may slip, leading to timing issues. The belt should be replaced according to the manufacturer's recommended interval.
* Incorrect timing belt installation: If the belt was recently replaced, it might have been installed incorrectly.
If you suspect a problem with the timing belt or tensioner, do not attempt to adjust the tensioner yourself. This is a complex system and incorrect adjustments can cause significant engine damage. Take your Jeep to a qualified mechanic for diagnosis and repair. Improper timing can bend valves and cause catastrophic engine failure.
