Fuel pump hanger question.

[H_D]

There are 3 pipes that connect to the fuel pump hanger. Im guessing one is for fuel delivery the other is for fuel return but not sure what the 3rd one is for? Can anyone enlighten me.

Thanks

 

[Jay]

Breather line sends the tank fumes to the charcoal filter canister on the bulkhead. This filters the fumes and makes them safer. It vents to atmosphere.

 

[H_D]

If the breather pipe is leaking will this cause a pressure drop in the fuel tank

 

[Jay]

I don't believe so, theres no pressure in that pipe other than the fumes going out to atmosphere. I doubt the ACF has must restriction.

People usually remove them and let the pipe see atmosphere without any hassle.

 

[Jay]

Although bear in mind that until the fumes have gone through the filter they would be regarded as flammable/hazardous so a leak in the pipe is not advisable.

 

[SKINY]

Same setup as the Celica, if it gets blocked or obstructed it can throw the emissions out. Experience