Empty the tank (see Safety precautions
above). Disconnect the fuel pipes and wires, and the breather tube if one is
fitted.Loosen the clips on the hose between the filler and the tank, and take
off the hose. Renew a perished hose or corroded clips.Tie a plastic bag over
the tank opening, for safety.compressor auto oil seals Good quality.
The tank may be held by bolts around its flange or by metal straps. auto oil seals.Bolts on the outside of the car may have to be loosened with the aid of penetrating oil. Allow the oil a few hours to work.
A tank fitted through the boot floor may have a sealing gasket between the tank and the floor. auto oil seals.If it does not have a gasket, seal the joint with mastic.Bolt in the new tank, then reattach all the connections. Refill with petrol, check for leaks and see that the fuel gauge registers.compressor auto oil seals Good quality.
Cleaning a blocked breather
A blocked breather in the tank causes the same symptoms as running out of fuel, although the fuel gauge does not indicate ‘empty’.Test by quickly removing the filler cap. If there is a loud sucking noise, the breather is blocked.The tank may breathe through a vent in the cap. This can become blocked or a new, non-vented cap may have been fitted by mistake.
Many cars have a second, small-bore hose from the top of the tank or filler neck, which may loop up and down to prevent siphoning. auto oil seals.Check that it is not blocked by dirt.A few cars use a broad hose with a closed end. Instead of letting in air, it collapses to equalise pressure. This type is maintenance free.Several recent makes have a sealed fuel system. At all times they must have about the same pressure inside and outside the tank. Such systems are also maintenance free.compressor auto oil seals Good quality.
The tank may be held by bolts around its flange or by metal straps. auto oil seals.Bolts on the outside of the car may have to be loosened with the aid of penetrating oil. Allow the oil a few hours to work.
A tank fitted through the boot floor may have a sealing gasket between the tank and the floor. auto oil seals.If it does not have a gasket, seal the joint with mastic.Bolt in the new tank, then reattach all the connections. Refill with petrol, check for leaks and see that the fuel gauge registers.compressor auto oil seals Good quality.
Cleaning a blocked breather
A blocked breather in the tank causes the same symptoms as running out of fuel, although the fuel gauge does not indicate ‘empty’.Test by quickly removing the filler cap. If there is a loud sucking noise, the breather is blocked.The tank may breathe through a vent in the cap. This can become blocked or a new, non-vented cap may have been fitted by mistake.
Many cars have a second, small-bore hose from the top of the tank or filler neck, which may loop up and down to prevent siphoning. auto oil seals.Check that it is not blocked by dirt.A few cars use a broad hose with a closed end. Instead of letting in air, it collapses to equalise pressure. This type is maintenance free.Several recent makes have a sealed fuel system. At all times they must have about the same pressure inside and outside the tank. Such systems are also maintenance free.compressor auto oil seals Good quality.
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