The cylinder 2 glow plug preheats the air-fuel mixture in cylinder 2. It helps start the engine in cold weather. It is located near the front of the engine block. Replacing this plug is usually straightforward. If the plug fails, cylinder 2 will misfire when cold, making the engine shake.
Mechanic Glossary
2 Glow Plug
The starting heating element located inside the combustion chamber of cylinder 2.
Frequently Asked Questions
It causes rough idling, misfires, and white smoke on startup. The issues disappear once the engine warms up.
Unplug the electrical connector, use a deep socket to unscrew the plug, and install the new one. Use anti-seize on the threads.
A standard deep socket and a torque wrench are usually all you need. Be careful not to cross-thread the delicate cylinder head.