There is a massive fuel leak, pointed out with the arrow.

I lost a quarter tank of gas in about 15mins...



I got no idea how to fix this, or if I did something wrong when I took the intake off?
Any ideas?

 

That arrow points to your #2 injector. Either the injector is cracked or the upper O-ring is missing or damaged. Did you remove the fuel rail when you took the intake off?

 

Pretty sure it's an O ring problem, since it squirts out perfectly in a circle... how do I remove the injector? Anything special about fixing this that I should know?

 

Pull the fuel rail hold down bolts and wiggle it up. It should come up with all the injectors attached. You can't remove it to far as all of the wires are still hoooked as well as the fuel lines. But it should come up enough for you to remove that injector to replace the o-ring.

 

I know this thread is a few weeks old, but wondering if u got it fixed yet. In that picture the clip that holds the injector into place is missing, its a good possibility that the injector popped down to where the O ring would but in the flaired section of the fuel rail....thus no longer keeping a seal. Hope that helps!

 

It looks to me as if the fuel leak is where the injector engages with the fuel rail...

 

I'm sure the 2+ year old leak has been fixed for a long time.