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
🔧 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.
🎯 Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.











