Help, Car doesn't want to start!
 

Hey, so i got into my car this morning and i turn the key and it turns over but won't start, so I do it again, but tap the gas a little bit and it starts. For the rest of the morning it has had more and more trouble starting, to the point where it takes 5 turns of the key before it starts up. After the car is warmed up it idles roughly, and pretty low at 500ish. Under the hood I can hear a loud hissing, like air rushing out from somewhere coming from the back of my engine bay, near the back 3 spark plugs kind of. From what I've looked at I can't see any loose lines or anything that could be causing leaking, but I've only briefly looked from the top. I also have the code P0440, which I believe could mean there is a vacuum leak? Which would make sense with the low idling and hard to start, right? If so, does anyone know where the leak could be coming from? Or is there another problem?

You definitely have a vacuum leak. The EVAP purge control solenoid is on the top of the intake plenum at the back, closer to the right hand side. It has at least a couple of tubes/hoses attached to it, plus an associated manifold where it splits off. Follow all those associated lines back while listening for the leak. It does sound like it's coming from under the hood, so it shouldn't be too hard to find.

Does someone have a picture of what it looks like and where it is?