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Just pulled into garage from a weekly spin and thought I smelled something. Went back out there a few minutes later and saw a big puddle of gas that was getting bigger, right behind left front tire. I grabbed a flashlight but couldn't see where it was originating from above looking down on engine. It stopped after a few minutes. The drip was hitting the ground behind and slightly inboard from left front tire, roughly same place where you see AC condensation hitting ground behind right front tire. I'll jack it up manana and look from there. Anybody got a hint/been down this road before?
What year car is it? The fuel lines run down the passenger/right side of the car. I it is leaking on the left side I would guess it’s coming out of the charcoal canister if you have one
Fuel pump is on the right hand side of the car. left side just behind the front tire is the vapour canister. But why is so much fuel coming down the vent line? sounds like fuel separator on the tank is the root of the problem.
None of the Corvette Vendors carry a 1973 Corvette Fuel Vapor Canister (three ports). I'm not sure on the ACDelco one above maybe one of our forum members will.
Haven't read anything good about the repop E.E.C valve. A used OEM Fuel Vapor Canister is on my list of spares just haven't found one yet. I'm curious now about that ACDelco canister.
Lots of threads about this. Only way fuel can be on the left (drivers side) is if your charcoal canister is leaking fuel, usually that happens because you have a bad fuel separator on your tank. Your canister should only be receiving fuel vapor if your fuel separator is working properly.
I also have a 73 L48, I just removed my separator because I don't trust reproductions and read the threads people listed above. Turns out mine was also broken. I plugged the nipple on the tank with 3/8" ID hose and a bolt. I didn't have a charcoal cannister so eliminating the separator wasn't a difficult decision for me
You can check on it by taking a video by sticking your hand between the muffler and body, while you lay on your back. You can also remove it and the hoses the same way if you are patient. Helps if your exhaust isn't welded completely like mine
I have a major remodel going on at the house, workers coming and going all day long, literally. So I haven't been able to get under the car and look around. Curiosity finally got the better of me and I started it, let it run for about 30 seconds. Not a single drop of fuel came out, no smell either. Has me thinking about the gas station yesterday. I topped it off higher than I usually do, all the way up to bottom of flange thing that gas cap goes on. Does that separator gizmo mount really high up on the tank? I'm wondering if now that the level is down a gallon or so if the tube from separator is above the level of the fuel? Just thinking out loud here.............
Not sure how many gallons it takes, but the fuel separator is pretty high up there. Sloshing of fuel around when you drive can force fuel down towards the charcoal canister if separator is bad, even if the level of gas is nominally below the separator. I'm guessing your current fuel level is below the separator, and because you aren't driving it isn't sloshing around. Looking up at separator 3/8" hose that goes from tank to separator. Also mounted high up in tank.
Last edited by roamin' around; May 13, 2021 at 04:42 PM.
I always topped off the tank in my vehicles....
the bad news is...topping off is the fastest way to ruin a charcoal cannister.
I broke the habit about a month ago when I installed a canister on my '68 (doesn't require one, though)
I always topped off the tank in my vehicles....
the bad news is...topping off is the fastest way to ruin a charcoal cannister.
I broke the habit about a month ago when I installed a canister on my '68 (doesn't require one, though)
Yeah that must have been what caused the gusher at the vapor canister. I drove it around yesterday for 30 ish minutes and nothing, not a drop came out. On the bright side, does this mean that I now have a canister full of charcoal that you don't need lighter fluid for?
Fuel Leak
