Here's the facts:

-Walbro 255
-SGP Racing return fuel system
-Smell is coming from passanger side
-At idle it drips (very slowly, like a small drop every 5min-10min), but it must be hitting a hose and flowing down, because I can't find where it's coming from from under the car, or in the engine bay.
-Only happens when weather is below 60*. During the summer this issue goes away.
-Gets worse inside the car when AC/heater is turned on. Recirculation or does does not effect it!
-Cars performance or fuel pressure has not been effected (or it's effected negatively at such slight amount the cold air makes up for it).

So I'm looking for any kind of advice at all. I cannot find this effer. I pulled the backseats (not noticing the small drip) first since the smell is worse inside the car then outside (ac/heater blowing or not), but it looked fine. I'm guessing it's a loose fitting that contracts during the cold causing it to actually only leak then and in the summer the metal expands and seals it.

Anyone got any schematics, or anything else? Maybe I'm overlooking a fitting or something... Ugh... headache from gas fumes. I need help quick!

 

prolly coming from the Y fitting leading to the fuel rails.

 

gravity dictates that you look up.......not a joke.if you can see where it is ending,you can follow it to the source.

 

just calm down...light yourself a cigg...then take a look down there. everythings going to be alright.

just kidding. dont do that. you will burst into flames. instead, take some pics...is it near your fuel return? think of the fuel system as a whole and look to see where the dripping collects.

 

what go-fast said.

jack the sucker up and make sure you have good lighting. then find it. i dont think you need help for this sort of thing.

be cautious though...no ciggs...no light bulbs directly underneath where it drips. gasoline fires arent easy to put out.

 

Where is it dripping on the floor? Under the engine bay? Towards the rear of the car by the tank? Maybe one of your fuel hoses is too close to your headers and its warped a small hole.

 

It seems to be dripping on top of the tranny, running down, and coming off the front of the oil pan (right over the O2 sensor plug). This morning I started the car and it looked like it was raining under the car... it was THAT bad of a leak. As the car warmed up the drip got less and less...

Checked the Y connection that sits right over the tranny and it's OK.

I'm thinking injector o-ring maybe? Maybe it swells with heat and doesn't leak?