| Author | Topic |
|---|
Location:
Brisbane
Registered:
February 2003
|
|
Re: Help me ID pipes (pictures)
|
Sun, 15 May 2005 13:09
|
 |
no - anything from about 1976 onwards shoud have three lines from the tank to the engine bay:
main fuel feed (in an EFI car there's usually a fuel pump at or in the tank)
fuel return (end of port inside the tank will be in the upper part of the tank)
fuel vapour (vents to charcoal cannister - engine burns off petrol fumes, condensate either drains away on a carbi model or is sucked back to the tank in an EFI model)
i would suggest that all three be correctly plumbed up - the fuel vapour venting system, along with the correct petrol filler cap, helps maintain safe pressures in the fuel tank.
If you block off the vents, have a hard-sealing filler cap and then park car in the sun, you will get excess pressure built-up in the tank and will vent flamable fuel vapour via the petrol cap and also do weird things to the fueling system. You will also get petrol fumes at the rear of the car. If the tank is 100% full of petrol, you might even get petrol leaking out from the filler hole.
Conversely, the wrong charcoal cannister, or lines left open under the bonnet can lead to unpleasant petrol fumes at the front of the car.
|
|
|
