66K views · 980 reactions |  Watch as we take on the dreaded P003A code facing our LML Tow Pig – A Must Watch for Anyone Facing This Issue! #LML #Duramax #Turbo #StealthMach1 | Duramaxtuner.com | Facebook

Do you have a check engine code P0303, which indicates an engine misfire on cylinder 3? In this video, Sue shows you how you can diagnose a misfire without any special tools, just by moving around the spark plug and ignition coil! Check out more videos on our YouTube Channel: http://1aau.to/m/youtube Shop High Quality Parts: http://1aau.to/m/ShopParts | 1A Auto Parts