Hyundai i30 Mk1 1.6 CRDi — Glow Plug Failure / Snapping in Head
Diesel glow plugs burn out over time causing cold starting issues. The major problem is they often snap in the cylinder head when mechanics try to remove them.
Severity
ModerateDIY Difficulty
Moderate
Est. Cost
£100–£300
OBD Codes
P0380Injectors
Typical layout and location for the Injectors assembly.
Symptoms
- Hard starting in cold weather (below 5°C)
- White smoke on cold start for 30 seconds
- Flashing coil light or EML on dash
Root Cause
Carbon buildup around the tip of the glow plug effectively welds it into the cylinder head. Applying too much torque to remove it shears the threaded top off.
How To Fix
- Soak the glow plugs in penetrating oil for several days before attempting removal.
- Only attempt removal with the engine piping hot.
- If a plug snaps, specialist removal tools are required (£150-300 call-out fee).
- Standard replacement cost: £100-200
Estimated Repair Costs
| Repair Option | Est. Cost (GBP) |
|---|---|
| DIY (parts only) | £40–£120 |
| Independent Garage | £100–£300 |
| Main Dealership | £160–£480 |
Other Faults on This Variant
Air Conditioning Condenser Leak (Stone Damage)
MinorThe air conditioning condenser is mounted at the very front of the cooling pack, making it highly susceptible to stone damage from the road, leading to refrigerant loss.
Front Anti-Roll Bar Drop Link Wear
MinorThe front anti-roll bar drop links wear out on heavily potholed UK roads, causing an annoying knocking sound at low speeds.
Alternator / Smart Charge System Failure
SevereModern vehicles use smart charging systems to reduce engine load, but the complex regulators on the alternators frequently fail.
Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.