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 Filler Cap (Typical): Notes
| Callout | Component Name |
|---|---|
| 1 | Fuel Tank Filler Cap |
| 2 | Fuel Tank Filler Pipe |
| 3 | Fuel Filler Door |
The fuel tank filler pipe is equipped with a turn to vent screw on the type cap which incorporates a ratchet action in order to prevent over-tightening.
The turn to vent feature allows the fuel tank pressure relief prior to removal. Instructions for proper use are imprinted on the cap cover. A vacuum safety relief valve is incorporated into this cap.
The fuel fill pipe has a tethered fuel filler cap. A torque-limiting device prevents the cap from being over-tightened. To install the cap, turn the cap clockwise until you hear audible clicks. This indicates that the cap is correctly torqued and fully seated. A fuel filler cap that is not fully seated may cause a malfunction in the emission system.
| Callout | Component Name |
|---|---|
| 1 | Fill Limit Vent Valve (FLVV) |
| 2 | T-Connector for Vapor Hose/Pipes to Vent/Rollover Valve and Fill Tube |
| 3 | Fuel Tank Pressure (FTP) Sensor |
| 4 | FLVV Outlet to Evaporative Emission (EVAP) Canister |
| 5 | Fuel Feed Outlet |
| 6 | Fuel Return Inlet-Not Used |
| 7 | Fuel Sender Assembly Connector |
| 8 | Fuel Pump |
| 9 | Fuel Pressure Regulator |
| 10 | Fuel Filter Assembly |
| 11 | Fuel Level Sensor Float |
NO RELATED
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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.