Air pressure in fuel tank?

[91CoupeMike]

I used about 25 dollars of gas in about 50 miles. WTF?

I don't see any leaks, no fuel smell or anything.

I go to take the fuel cap off and it damn near flew off from all the air pressure inside the tank.

Where do I start to look?

This is after I had the hose from the pump to filter lay on the exhaust pipe and melt a hole in the hose, I replaced that and now this.

My mustang went from 21mpg to 7mpg. Fml

[80coupe]

man you sure do fuck alot of shit up lol!

[91CoupeMike]

Lol, shit just keep happening faster then I can fix it.

My trunk is full of parts but my schedule is full too. Freaking sucks.

[Josh.0]

I know the feeling

[80coupe]

i have no room to talk i got the worst luck when it comes to breaking shit!

[Josh.0]

this is true....

[80coupe]

i have so much powaaa i trashed a 8.8 in a 2 weeks!

[91CoupeMike]

i have so much powaaa i trashed a 8.8 in a 2 weeks!

More powa to the backlash??? Lol

[80coupe]

More powa to the backlash??? Lol

sounds about right! me and josh pulled it yesterday then jim fixed it i think is was about .019 lol!

[91CoupeMike]

sounds about right! me and josh pulled it yesterday then jim fixed it i think is was about .019 lol!

Haha that shit'll happen.

WTF is wrong with my fuel tank?

[80coupe]

my buddy's 85 did this before i forgot what he blocked off that made it do this! did you block anything off or take anything off when you did your fuel system?

[holeshot]

Pull the rubber ring off the gas cap till you figure it out.
It sounds like the vent on the tank is stpped up.

[IHaveAMustang]

Weird...my tank builds up SOME pressure. I pull the cap and it lets a little "whoosh" out and then i'm good to go..nothing explosive like you described.

I get about 12 - 13 mpg...or I did at least 2 years ago when I checked...it get 1000 miles a year so I don't really care much about economy.

[91CoupeMike]

Weird...my tank builds up SOME pressure. I pull the cap and it lets a little "whoosh" out and then i'm good to go..nothing explosive like you described.

I get about 12 - 13 mpg...or I did at least 2 years ago when I checked...it get 1000 miles a year so I don't really care much about economy.

Some pressure is normal. 1-2psi for evaporate system effectiveness.

But mine sounds like someone slashed my damn tire when I open the cap, I'm about to drop the tank and start there..

[91CoupeMike]

my buddy's 85 did this before i forgot what he blocked off that made it do this! did you block anything off or take anything off when you did your fuel system?

Not a damn thing, I wanted to take the evaporate system off at one time but decided against it.

Pos ford! Lol