Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fuel Pump Flow Test
If reduction of fuel supply is suspected, perform the following checks:
- Make sure that there is fuel in the tank.
- With the engine running, check the fuel feed pipe and hose from fuel tank to injector for evidence of leakage. Retighten, if pipe or hose connection is loose. Also, inspect bent or kink fuel pipes and hoses.
- Insert the hose from fuel feed pipe into a clean container, and check for fuel pump flow rate.
- Connect the pump relay terminals with a jumper wire and start the fuel pump to measure delivery. Fuel delivery should be a minimum of 0.38 liters every 15 seconds.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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