Common Symptoms
- Hard starting in cold weather
- White smoke from exhaust on cold start
- Rough idle until engine warms up
- Glow plug warning light illuminated on dash
- Extended cranking time before engine starts
- Engine misfires during warm-up period
Most Likely Root Causes
- Failed cylinder 2 glow plug
- Damaged wiring or connector to cylinder 2 glow plug
- Corroded glow plug connector terminal
- Failed glow plug control module or relay
- Open or short circuit in glow plug harness
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Component Location
Cylinder 2 glow plug is threaded into the cylinder head combustion chamber, typically on the intake side of the engine block.
Manufacturer Notes
Some diesel engines require specific glow plug torque specifications and may use intake or cylinder head mounted glow plugs depending on design.
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