EfiniX
Well-known member
when I first got my car about... well, whenever ago, I had a pretty heavy smell of gas coming from under the hood on hot days. Turns out that as part of the ongoing hack-job the PO was subjecting the car to, some of the enviro stuff got pulled and I had a line for the fuel tank just sort of... well open. If I had to guess, this was some sort of tank breather line (can't let those hydrocarbons go). EHMotorsports (Evan) plugged it and I've been fine (it didn't run funny or anything, and that's on the old and now new motor).
That being said, i still caught a whiff of gas from time to time. Yesterday, I made a discovery, and I'm wondering if maybe sealing up the system wasn't the best idea (no where for the pressure in the tank to go?).
Here's my observations:
- smells a bit on hot days (just fine this cool morning)
- if I park on a steep slant, with the fuel filler side of the car leaning down the hill (visitor parking spot at my condo) on a medium to full tank on a warm day, I drip gas from somewhere around the tank/fill tube
- my gas cap seals and when I take it off, it can hiss for between 5-10 seconds while the pressure is released
These things seem to point to either a leaking tank and/or an overpressure issue. So is the tank supposed to be 100% sealed, or should I slap a charcoal catch-can on that return line under the hood?
Thoughts? Like I said, the car is running like a top, and I'm the only one noticing the smell. I'm not going to park on that hill anymore, and I've never seen it drip anywhere else (and you can be sure I've looked).
That being said, i still caught a whiff of gas from time to time. Yesterday, I made a discovery, and I'm wondering if maybe sealing up the system wasn't the best idea (no where for the pressure in the tank to go?).
Here's my observations:
- smells a bit on hot days (just fine this cool morning)
- if I park on a steep slant, with the fuel filler side of the car leaning down the hill (visitor parking spot at my condo) on a medium to full tank on a warm day, I drip gas from somewhere around the tank/fill tube
- my gas cap seals and when I take it off, it can hiss for between 5-10 seconds while the pressure is released
These things seem to point to either a leaking tank and/or an overpressure issue. So is the tank supposed to be 100% sealed, or should I slap a charcoal catch-can on that return line under the hood?
Thoughts? Like I said, the car is running like a top, and I'm the only one noticing the smell. I'm not going to park on that hill anymore, and I've never seen it drip anywhere else (and you can be sure I've looked).