Engine Knocking Noise From Carbon Buildup on Mitsubishi Eclipse

Problem Description and Possible Solution

Carbon buildup on the top of the piston is common. Over time this can lead to symptoms varying from light ticking to knocking noises. Performing a fuel injector cleaning procedure can often help the condition by removing some of the piston top deposits.

Problem Data
RepairPal Verified
Average mileage: (–)
Engine affected: 2.0L 4 Cylinder
6 model years affected: 1990, 1991, 1992, 1993, more1994, 2002
6 people reported this problem