Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Omegadoha, Desert Member]

Got a new problem with the petrol tank not filling up properly. Tank was empty today and after about filling up halfway the nozzle cut out as if to say full. Tried filling up at different stations just to see whether it was a one off, but no.

Is there a vent or something on the petrol tank that could be blocked.

[waspy]

Are you sure your gauge is accurate. There could be an under lying problem with the float, sender etc

[Pitchfork]

Tank's probably full of sand!

[JezInBrum]

Fuel tank vents may be playing up. Part of the filler neck that vents the fumes as its filled up. May be worth seeing if you can push a length of hose down.

[Welung666]

I have a tank sat in the garage if you need any pics Doha

[Kevin Wood]

The vent pipe runs up to the charcoal canister in the front wing and through a solenoid valve behind the driver's side cylinder head to the inlet manifold. Could be that the charcoal canister or pipe are blocked, I guess.

Kevin

[Andy H]

Are Omega petrol tanks prone to collapsing?

Maybe not in the UK but how about in Doha at 50 degC with the petrol pump creating a vacuum in the tank?

Side Note - has anyone got any details of the tank vent system? When the engine isn't running I believe the tank should vent through the carbon canister to atmosphere. I also believe that the solenoid valve should draw fresh air through canister to purge it of fuel fumes when the engine is running therefore there should always be a permanent vent to atmosphere whatever the valve does. If the permanent vent were to get blocked then manifold vacuum would be applied to the tank when the solenoid valve opened.

[mantahatch]

Are Omega petrol tanks prone to collapsing?
Maybe not in the UK but how about in Doha at 50 degC with the petrol pump creating a vacuum in the tank?

Side Note - has anyone got any details of the tank vent system? When the engine isn't running I believe the tank should vent through the carbon canister to atmosphere. I also believe that the solenoid valve should draw fresh air through canister to purge it of fuel fumes when the engine is running therefore there should always be a permanent vent to atmosphere whatever the valve does. If the permanent vent were to get blocked then manifold vacuum would be applied to the tank when the solenoid valve opened.

Have to say that that was my first thought, I would have a good look underneath at the tank for any sign of distortion.

[Andy H]

Have to say that that was my first thought, I would have a good look underneath at the tank for any sign of distortion.

I'm thinking that the weight of the fuel would keep the base down, I'm more worried about the top collapsing.

[mantahatch]

Have to say that that was my first thought, I would have a good look underneath at the tank for any sign of distortion.

I'm thinking that the weight of the fuel would keep the base down, I'm more worried about the top collapsing.

Possibly, but the one's I have seen where virtually sucked dry and so allowed the bottom to move aswell.

It is not a common occurence, but does happen. I hope we are wrong.