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Weber Dcoe 40 Gas Stench


MDL8440

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So this is my first post here and will definitely not be my last.  I bought a 76 2002 from a guy in Austin (via Houston) and had a blast driving it back to Austin, all over Austin, then ultimately back to Dallas.  The car is in great working order and I didn't have a single issue after putting just over 600miles on her in three days.

 

However I have noticed that a very strong gas stench is coming from the Webers that are on there and when driving to work the past couple days it seems to be getting a bit worse.  It starts fine and runs very strong however I would like to address any issue that it has now rather than later. 

 

Does anyone have any suggestions on what can be done?  It seems to be tuned just fine as I don't have any issues starting in the morning or after stopping and starting (ie: running in to the store to get champagne after driving back to Austin). 

 

Below is the full description the seller had on CL, for reference.

 

"I am reluctantly forced to part with this wonderful example of the world's first bona fide "sport sedan" due to a personal relocation to Central America. This beautiful car has had over $30K worth of loving care spent during its life, with records running back to 1976 that document it's mileage at 151,000. An older properly done re-spray in the correct Verona Red shows little wear and still gleams. There is absolutely no structural rust on this car, although there is a very small area of paint bubbling below the drip rails above the rear pillars and some on the driver's door, all minor surface rust issues. There's a small paint chip adjacent to the front Roundel emblem on the hood, a minor bulge above the left rear wheel well, some wrinkling at the top of the left front wheel well, and some hood spot repairs nicely done and hard to see (see pictures). Overall, the body is in remarkable condition for a 38 year old car, and a real head turner.
The black interior is in remarkable condition for its age, with excellent door cards, 320I Recaros, re-padded rear seat, no rips or tears in the original headliner, and excellent carpeting. The sunroof works perfectly with no leaks; the windshield has been recently replaced and shows virtually no pitting or cracks. A Blaupunkt Montreal AM/FM CD player with four Kenwood speakers provides the tunes. Fitted with a Mark IV A/C as designed by the John E. Mitchell Company, which many consider as the finest engineered A/C conversion available for 2002's, with its high capacity evaporator fan and large evaporator it not only REALLY cools the interior, but as a result of the incorporation of a Sanden 508 compressor and the motor's substantially increased power over stock (details below) it is difficult to tell when it's in use, performance related or otherwise. Additionally, the substitution of a 320I radiator and a powerful Bosch condenser fan means that there are no engine overheating problems, even during Texas summers. The compressor, condenser fan, dryer, and hoses are all new as of 3-28-2014.
All suspension, steering, and driveline components are tight, solid and as new. The combination of a Turbo air dam, Bilstein sports shocks and struts, and Korman Roadsport (1/2" lowered) springs, along with fresh urethane sway bar bushings, provides a perfect combination of handling and comfort, and, this car tracks like an arrow on the highway as well, even in strong crosswinds.
The engine (original block) was completely rebuilt by Korman about 45K ago, with 10 to 1 pistons, a 272 degree cam, a ported and polished E-21 head and twin Weber DCOE 40 carbs, headers, a Stainless Steel Ireland Engineering exhaust system (headers back, including muffler), and runs perfectly. It has no problem idling with the A/C operating, still pulls strong at lower RPMs while delivering a significant power increase over stock in the middle and high RPM ranges. An electronic ignition has been installed along with a 320I alternator, a new battery, and there are no oil leaks.
A new clutch and pressure plate was installed about 12K ago, and the transmission shifts perfectly. There are new (4K) Korman vented rotors, calipers, and pads, and Falkan 195/60 tires (3K) mounted on rash and corrosion-free 320I "bottle cap" wheels, which complement the car beautifully.
The original invoice, two owner's manuals, service manual, a Chilton manual, and a complete maintenance history with receipts are also all preserved, as is the original 2002 spare part kit. A box of additional spare parts is also included. The car has current Texas Vehicle Registration and Inspection stickers as well.
This car is fully sorted and ready for use as a daily driver or a cross country trip, and draws an incredible amount of attention by all ages, especially from Bimmer-heads. Plus, it is such a blast to drive!!!
"

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the natural behaviors of a non-sealed fuel delivery system, that you may or may not be used to being around?

 

OR, maybe this..

 

when I recently converted to side drafts on my '75, I used the former fuel return line (along the driver rocker panel and frame rail) as a feed, leaving the old feed line unused.  The original line exits from the center of the firewall, just above the transmission.  Its a nylon tube.  Well, when I did the conversion, I swapped the two lines at the tank as needed..  What I didn't expect to happen is that when I filled the tank and left the gas station, as I drove stop light to stop light, thar original feed line filled with fuel, and I got the strong smell of gasoline in the cabin.  I quick pulled into the first parts store and popped the hood.  Knowing the car intimately, it took only a few seconds to check all fuel related areas and nail this down as the culprit.  I went in and bought a rubber cap and blocked it off.  No issues since.

 

Maybe this will help..?

2002 newbie, and dead serious about it.
(O=o00o=O)
Smart Audio Products for your 2002

 

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I'll check the seals when I get home tonight.  I also planned on tearing it down and at least giving it a good cleaning this weekend.  I've only ever worked on offroad carbs but since this isn't my DD i'm not too worried about it.  I don't want to mess with any of the jet settings or anything since it's tuned and synched good but a good cleaning never hurt.

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Open your trunk, does it smell like gas? it is more common to smell gas coming from there due to various venting problems than from under the hood.  If so then make sure all the hoses are in good condition and everything is sealed (including the container under the parcel shelf)

74 Golf

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A few things to check (altho you have to wonder if the PO noticed it too). first I'd check all fuel line fittings/clamps. Run your finger under the banjo joints that connect rubber line to carb body. DCOEs like a low fuel pressure setting - some people use a pressure regulator to keep fuel pressure from over-powering the floats. I'd get this sorted out before driving a lot.

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