2018 Hyundai Elantra Spark Plug Replacement
Complete guide to 2018 Hyundai Elantra spark plug replacement. Cost estimates, difficulty level, time required, and environmental impact.
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💰 Cost Breakdown
💡 Tip: Costs vary by location and repair shop. Authorized service centers typically charge more than independent repair shops.
🔧 Repair Overview
Spark Plug Replacement is one of the most common repairs for 2018 Hyundai Elantra. This repair involves replacing the damaged engine component with a new or refurbished part. The process typically takes 1-2 hours and requires moderate skill level.
What You'll Need
- Replacement engine part (OEM or aftermarket)
- Precision screwdriver set (Phillips #000 or pentalobe)
- Opening tools (plastic spudger, suction cup)
- Adhesive strips or glue
- Clean workspace with good lighting
Step-by-Step Process
Step 1:
Make sure the car is off and cooled down entirely by allowing at least the car not to be in use for two hours or more.
Step 2:
Open the hood by pulling upwards on the lever found by the lower left side of the driver seat.
Lift the hood with your hands by opening the latch that holds the hood down.
Prop up the hood stick to hold the hood open.
Step 3:
Loosen and remove the nut next to the battery terminal using the 10mm socket attached to the wrench.
Step 4:
Move the power supply cable aside carefully and wedge it between the battery.
Step 5:
Remove the engine cover by placing both hands on each side and placing it aside from our work station.
Step 6:
Unfasten the lock pins from the electrical connectors and place them aside by the battery.
Step 7:
Unscrew the four screws from the ignition coils using an 8mm socket attached to a wrench.
Step 8:
Remove all four ignition coils and keep them in order as you remove them outside of our work station.
Step 9:
Loosen and remove spark plugs with a ⅝ long socket with an eight-inch socket extension and wrench.
Use a magnetic pickup tool to remove the spark plugs.
Step 10:
Insert the new spark plugs gently to avoid damaging the spark plug using the magnetic pickup tool.
Step 11:
Use the 5/8 socket with an 8-inch extension attached to a wrench to tighten the spark plug, without breaking the spark plug.
Step 12:
Insert ignition coils into their designated places.
Step 13:
Insert and tighten screws for the ignition coils using the 10 mm socket attached to the wrench.
Step 14:
Connect all four electrical connectors and lock them back into place.
Step 15:
Place the engine cover back into its designated spot.
Step 16:
Reconnect the battery by moving the power supply cable back into its terminal.
Tighten the nut back alongside the terminal using the 10mm socket attached to a wrench.
Close the positive terminal battery cover and ensure it is properly closed.
Step 17:
Place the hood stick back into its designated spot and gently close the hood.
📖 Repair guide provided by iFixit - The free repair manual. Licensed under CC BY-NC-SA 3.0.
iFixit Difficulty: Moderate | Time: NaNh NaNm
DIY vs Professional Repair
✋ DIY Repair
- ✅ Lower cost (parts only: $60-$120)
- ✅ Learn new skills
- ❌ Risk of further damage
- ❌ No warranty
- ❌ Requires tools and time
🔧 Professional Repair
- ✅ Expert installation
- ✅ Warranty included
- ✅ Faster turnaround
- ❌ Higher cost ($100-$200)
- ❌ Need to find reputable shop
Environmental Impact
By choosing to repair your 2018 Hyundai Elantra instead of replacing it, you're preventing approximately 5698 kg of CO₂ emissions. Manufacturing a new 2018 Hyundai Elantra generates 5700 kg of CO₂, while this repair only produces about 2 kg of CO₂. That's a 100% reduction in carbon emissions!
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