Re: 2002 WJ 4.7 HO TuneUp Question
I would think that its better to do tune ups regulary and not waiting for problems to arrise. Eventhough the engine is still running ok, it most probably is not that efficient and using more fuel than needed.
Where only the plugs never changed, or also the other more regular items?
JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks /
Pirelli Scorpion ATR 245/65/17/
Transgo reprogramming shiftkit.