Parts for your 2001 Nissan Bluebird-Fuel cap

2001 Nissan Bluebird Fuel Cap

Based on Nissan’s own technical literature—the Bluebird/Bluebird Sylphy (U14 and G10) owner’s manuals and the factory service manual sections for Fuel and EVAP—the 2001 Nissan Bluebird is fitted with a threaded, sealing fuel-filler cap that forms part of the evaporative emissions (EVAP) system. A fuel cap is absolutely relevant and used on this model.

On the 2001 Nissan Bluebird, the fuel cap does a quiet but vital job. It seals the filler neck to keep petrol vapours from escaping, helping the EVAP system maintain the right pressure so the car meets emissions requirements and avoids that whiff of fuel around the rear quarter. It also protects the tank from dust, water and road grime—pretty important for Australian and New Zealand conditions where gravel roads and sudden downpours are part of life. A good cap also helps the onboard diagnostics behave, a loose or perished seal can trigger a check engine light with EVAP leak codes and cause the cabin or garage to smell like fuel.

Nissan specifies a non-vented cap with a ratcheting “click” mechanism and an O‑ring style seal. During servicing, it’s smart to give the cap a once-over: check the rubber seal for cracks, flattening or swelling, make sure the tether isn’t broken, and confirm the cap tightens until it clicks several times. If the cap won’t click, the thread is rough, or the seal looks tired, replacement is inexpensive and saves a lot of head-scratching later.

As part of regular servicing on a 2001 Bluebird, technicians typically:

• Inspect the cap seal and filler-neck lip for nicks or rust, wiping both with a clean damp cloth.
• Check for fuel odours after refuelling and verify the cap clicks when tightened.
• Scan for EVAP-related fault codes if the MIL is on, the cap is the first suspect for small and large leak codes.

When replacing, stick with an OEM or quality aftermarket cap that’s specified for the 2001 Bluebird (U14/G10/Sylphy). Avoid lubricating the rubber with petroleum-based products, if needed, a tiny amount of silicone-safe rubber conditioner can help, but generally a clean, dry seal is best. Refuelling habits matter too—don’t overfill past the first nozzle click, and always refit the cap until it clicks. A fresh, properly sealing cap keeps the Bluebird running sweet, keeps emissions in check and prevents those annoying warning lights.

Popular questions about the 2001 Nissan Bluebird fuel cap

What type of fuel cap does a 2001 Nissan Bluebird use?
It uses a non-vented, threaded petrol filler cap with a ratcheting “click” mechanism and an O‑ring seal, matched to the vehicle’s EVAP system. Tighten until it clicks several times for a proper seal.

What are the signs the fuel cap needs replacing?
Common clues include a fuel smell near the rear guard, a cap that won’t click tight, visible cracks or flattening on the rubber seal, or a check engine light with EVAP leak codes. If the filler neck is clean and the cap still won’t seal, swap it out.

Can a locking aftermarket cap be used?
Yes—provided it’s specified for the 2001 Bluebird (U14/G10). The seal style and cap depth must match the EVAP system. A correctly rated locking cap won’t upset the emissions system and adds a bit of security.