How to Diagnose Engine Misfires: Complete Guide
Start with a scan tool to pull codes (P0300–P030x). Then swap coils or plugs between cylinders and see if the misfire follows. 90% of random misfires are ignition-related; 8% are fuel; 2% are mechanical. It Started on a Freezing January Morning It was 7:42 a.m., 18°F outside, and the shop phone rang. “My Chevy Silverado … Read more