When a solid check engine light turns on, how long is it safe to keep driving?

Without a diagnostic tool, it's challenging to determine what is wrong with your car and whether to keep driving when a solid ...
Wrenching With Kenny on MSN

Flashing check engine light and rough running spark plug meltdown

A flashing check engine light and rough running lead to an unexpected spark plug failure. See what the inspection reveals and how the issue is diagnosed. #EngineMisfire #SparkPlugs #AutoRepair ...