Fuel Tank Overflows When Full

[blind_elk]

Got a problem, that I've had for a while, with the R30. Seems I can't fill the fuel tank too full, otherwise when the day warms, the fuel expands and overflows out the filler.

I got it fitted with a 120Y locking cap - I'm guessing they are compatible, but it could be the totally wrong cap to use.

Does the charcoal canister have anything to do with this problem? It's about 285k old, AFAIK.

Also, anyone know if Nissan have a ULP neck and cap for the R30?

Tx

[Ghostrider]

Got a problem, that I've had for a while, with the R30. Seems I can't fill the fuel tank too full, otherwise when the day warms, the fuel expands and overflows out the filler.

I got it fitted with a 120Y locking cap - I'm guessing they are compatible, but it could be the totally wrong cap to use.

Does the charcoal canister have anything to do with this problem? It's about 285k old, AFAIK.

Also, anyone know if Nissan have a ULP neck and cap for the R30?

Tx

I'm sure if the genuine cap was on the filler the car could be up side down and fuel wouldn't come out.

As for an ULP neck restricter, I was entertaining 2 options, one comes in a Mitsubishi express van and it converts the filler to a screw type cap and it's only silver soldered into the top of the filler neck and is pretty easy to get out with a propane torch, the other is attacking an 1986/7 N12 Pulsar or Astra as the restricter is spot welded in about 150mm down the neck, unless of course you can buy the restricter assembly, a/mkt.

The charcoal cannister is only to filter the fuel vapours as far as I understand.

Cheers, D

[66yostagea]

I've got a 30 and its never done that. I lost the original and replaced it with a genuine Nissan cap. This cap seals the tank, you can hear it when you open to fill. Since ULP came in I have always used it except for the odd tank of Premium.

[blind_elk]

Yeh, just talking with Garry Rogers Nissan. New genuine cap is about $34. The other problem could be that the lines to or from the cannister are blocked. I'll check those first, then probably get the right cap.

They don't make a ULP-style neck and cap for this model.