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2018 Hyundai Kona
2018 - 2022 Hyundai Kona
Inline 4 1.6L

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2018 Hyundai Kona fuel pump/sender seal replacement to fix evap leak code p0455

2018 Hyundai Kona fuel pump/sender seal replacement to fix evap leak code p0455

Suggested Parts

No Tools

No Parts Required

Tools & Fluids

Safety
Safety
Glasses
Nitrile
Nitrile
Gloves
10mm
10mm
Socket
or (3/8")
3/8
3/8
Ratchet
3/8
3/8
Torque Wrench
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How to Replace the Fuel Pump on a 2018 Hyundai Kona (In-Tank vs High-Pressure)

Step-by-step instructions, required tools/parts, safety precautions, priming tips, and leak checks for 2018, 2019, 2020, 2021, 2022

How to Replace the Fuel Pump on a 2018 Hyundai Kona (In-Tank vs High-Pressure)

Step-by-step instructions, required tools/parts, safety precautions, priming tips, and leak checks for 2018, 2019, 2020, 2021, 2022

Orion
Orion

🔧 Kona - Fuel Pump Replacement

Your Kona can have two “fuel pumps” people refer to: the in-tank low-pressure fuel pump module (inside the fuel tank, feeds fuel forward) and the engine-mounted high-pressure fuel pump (on the engine, boosts pressure for direct injection).

Before I give you the exact steps, we need to confirm which one you’re replacing so you don’t buy the wrong part or open the wrong system.

Difficulty Level: Intermediate | Estimated Time: 1.0-3.0 hours


⚠️ Safety & Precautions

  • ⚠️ Fuel is flammable—work outside or in a very well-ventilated area.
  • ⚠️ No smoking, no sparks, no hot work lights near the car.
  • ⚠️ Wear eye protection—fuel can spray when lines are opened.
  • ⚠️ Disconnect the 12V battery negative terminal before unplugging fuel pump wiring.
  • ⚠️ If working on the engine-mounted high-pressure pump, the fuel system can be at very high pressure—pressure must be relieved correctly before loosening any fittings.

🔧 Required Tools

You'll need the following tools for this repair:

  • Safety glasses
  • Nitrile gloves
  • Fire extinguisher Class B
  • 10mm socket
  • 3/8" drive ratchet
  • 3/8" drive torque wrench
  • Trim clip remover
  • Flat-blade screwdriver
  • Fuel line disconnect tool set
  • Shop towels
  • Catch pan
  • Hand pump siphon
  • Non-sparking brass punch (specialty)
  • Small hammer

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Fuel pump (in-tank fuel pump module) - Qty: 1
  • Fuel pump module seal O-ring - Qty: 1
  • Fuel pump (engine-mounted high-pressure fuel pump) - Qty: 1
  • High-pressure fuel line sealing washers/gaskets - Qty: 1

📋 Before You Begin

  • Park your Kona on level ground and set the parking brake.
  • Lower the fuel level if possible (under 1/4 tank makes in-tank work safer and less messy).
  • Disconnect the 12V battery using a 10mm socket (remove negative terminal first).
  • Have plenty of shop towels ready for spilled fuel.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Confirm which “fuel pump” you mean

  • If the pump is under the rear seat / cargo area behind an access cover, you mean the in-tank fuel pump module.
  • If the pump is on the engine and has a metal fuel line going to the fuel rail, you mean the high-pressure fuel pump.
  • Reply with: “in-tank” or “high-pressure”, and I’ll give you the exact Kona procedure with the correct line-release steps and tighten specs.

Step 2: Quick visual check (no disassembly yet)

  • Use a flashlight to look under the rear seat area for a round/square service cover (in-tank access).
  • Open the hood and look for a small pump on the engine with a rigid metal line attached (high-pressure pump).
  • Take a photo and send it if unsure.

✅ After Repair

  • Once the correct pump is replaced, you’ll need to prime the fuel system and check carefully for leaks before driving.
  • If any check-engine light appears, scan for codes and re-check connectors and line seating.

💰 DIY vs Shop Cost

Shop Cost: $450-$1,400 (parts + labor)

DIY Cost: $150-$900 (parts only)

You Save: $300-$500+ by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1-3 hours.


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