how to fix my Volkswagen Tiguan First Generation (2007-2018) that has a strong fuel smell

Solution

1. Preparation

• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Gather tools and parts needed for the repair.

2. Inspect and Replace Fuel Lines

• Sub-steps:
  1. Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
  2. Disconnect the negative battery terminal.
  3. Locate the fuel lines running from the tank to the engine.
  4. Inspect for cracks or leaks; replace any damaged sections with new fuel line.
• Tools Required: Socket set, screwdrivers, new fuel line.
• Safety Warnings: Work in a well-ventilated area and avoid open flames.

3. Check and Replace Fuel Injectors (if necessary)

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the electrical connectors from the fuel injectors.
  3. Remove the fuel rail bolts and gently lift the rail to access the injectors.
  4. Inspect the injectors for leaks; replace any faulty injectors with new ones.
• Tools Required: Torque wrench, socket set.
• Safety Warnings: Ensure the fuel system is depressurized before starting.

4. Examine and Replace Fuel Cap

• Sub-steps:
  1. Remove the fuel cap and inspect the rubber seal for wear or damage.
  2. If the seal is damaged, replace the fuel cap with a new one that meets manufacturer specifications.
• Tools Required: None (replacement part).

5. Inspect and Repair Fuel Tank

• Sub-steps:
  1. If a leak is found in the fuel tank, it must be removed for repair or replacement.
  2. Drain the fuel tank completely and remove it from the vehicle.
  3. Inspect the tank for holes or cracks; repair with a sealant or replace if necessary.
• Tools Required: Wrench set, fuel tank sealant (if repairing).
• Safety Warnings: Always drain fuel in a safe manner.