Porsche 997: Why is My Car Misfiring?

What Should You Do If Your Porsche's Engine Is Misfiring

997tt Starts, Warms up, Dies, then won't restart. - 6SpeedOnline

Common Issues the Porsche 997 Faces

Porsche 911 Carrera (991.1) PH Used Buying Guide - PistonHeads UK

99 996 cab tip: misfire & stalling - *valve problem!* - Water

The Dreaded 997 Turbo P0021 Code & Camshaft Issue

My 997 Carrera S progress.., Page 7

Why is my Porsche misfiring and telling me to visit the workshop?

The Dreaded 997 Turbo P0021 Code & Camshaft Issue

The Definitive Guide To Porsche 997 Engines (M96.05, M97, MA1)