| Author |
Message |
Sean F (Agracer)
Member
Username: Agracer
Post Number: 420
Registered: 2-2003
| | Posted on Tuesday, October 28, 2003 - 10:18 pm: | |
Well that was easy to solve.
No Carbon trap, no thre-way control valve, no liquid vapor separator....basically no Evaporative emissions control system.
The smell comes from the passenger side air intake mostly.
I'll replace all the fuel lines when I rebuild the carbs over the winter. Maybe even restor the evap. emissions control system. |
Philip Airey (Pma1010)
Member
Username: Pma1010
Post Number: 487
Registered: 7-2002
| | Posted on Tuesday, October 28, 2003 - 9:08 pm: | |
Ditto Mitchell's post. Amazing difference once the hoses are replaced. Also, I found the fuel filler neck hose to be most of the culprit |
Mitchell Le (Yelcab1)
Member
Username: Yelcab1
Post Number: 735
Registered: 11-2001
| | Posted on Tuesday, October 28, 2003 - 6:00 pm: | |
My carbs are not stinky. What I found was all the old gasoline line (especially the gas filler line) were very old and leaky and permeate gas.
After I replaced ALL hoses (every last one, oil gas, vaccuum) of the gasoline lines, my car and my garage smells like a injected modern car. No gas smell, no exhaust smell.
Try that. |
Hans E. Hansen (4re_gt4)
Intermediate Member
Username: 4re_gt4
Post Number: 1754
Registered: 4-2002
| | Posted on Tuesday, October 28, 2003 - 5:58 pm: | |
BTW, there are 3 often neglected short little hoses on top of the RH gas tank. Difficult to see, you can braille them to verify their existance. Mine were cracked and leaking, and would give off strong odors with full fuel tank and/or LH corners. From above, they look impossible to replace, but with the RH wheel off, they are in plain sight. |
Hans E. Hansen (4re_gt4)
Intermediate Member
Username: 4re_gt4
Post Number: 1753
Registered: 4-2002
| | Posted on Tuesday, October 28, 2003 - 4:03 pm: | |
The evap control system mainly collects vapors from the gas tank, etc. If the vapors are rising out of the carb barrels, which they do, then the evap system won't trap them.
I don't know of Weber manual online, but I think Pierce Manifolds has an online parts book, with 'blow up' illustrations. I use 2 Weber books. Unfortunately, I don't have them handy, and can't recall their titles. The problem is that neither is sufficient alone - to at least some degree you need both.
If you're still interested, I'll look for them when I get home. |
Mike Procopio (Pupz308)
Member
Username: Pupz308
Post Number: 611
Registered: 10-2002
| | Posted on Tuesday, October 28, 2003 - 3:41 pm: | |
I'm in a similar boat. When I first got the car--one hour in the garage and the garage smelled like a gas tank.
My mechanic did something easy/simple with the vapor recovery system--reconnected a vacuum line, or reconnected power to a vacuum pump, something like that--and then it was much better.
Now, though, it seems to be getting worse again...
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Sean F (Agracer)
Member
Username: Agracer
Post Number: 419
Registered: 2-2003
| | Posted on Tuesday, October 28, 2003 - 3:18 pm: | |
Thanks, I was begginning to think no one cared!
I'm going to check it over anyway just to be sure I don't have any leaks. Someone on "another board" suggested that the FUME recovery system may not be hooked up properly, or have been removed, and that would cause the same thing.
Any where I can get a weber manual online? |
Hans E. Hansen (4re_gt4)
Intermediate Member
Username: 4re_gt4
Post Number: 1752
Registered: 4-2002
| | Posted on Tuesday, October 28, 2003 - 2:20 pm: | |
The carb 308s are stinky.
If your exhaust has a strong smell, you need to lean the idle down a bit. Idling rich also will show itself with soot all over the back of the car - it's a bit hard to wash off. I leaned each cylinder down to where it started missing, then backed the screw out about 1/4 turn, and it greatly improved the car's halitosis, and cleaned up it's butt.
Gassy smell on shut down is normal. I'm guessing it comes from the float bowls, as the smell is strongest if you stick your nose in the air intake. |
Sean F (Agracer)
Member
Username: Agracer
Post Number: 417
Registered: 2-2003
| | Posted on Tuesday, October 28, 2003 - 8:40 am: | |
It's been a while since I've driven a carb's car so I forget some things.
Whenever I park my 308 in the garage, I can smell the exhaust is very strong. I think the car is running a little rich which would contribute to this. I can also smell some gas odor. It's not strong, but it's there. If I come back a 30-40 minutes later, the smell is still there if the garage doors are closed. If I open the door, it goes away pretty quick. Also, I can't hardly notice anything if it's parked outside unless I lean over the engine cover and smell for it.
Is it just the smell of fuel in the carburetor float bowls? The owners manual does say to turn the key, wait 20-seconds for the bowls to fill, then start the car. I thought maybe the smell was the left over gas after running that was evaporating.
I've looked and don't see any fuel leaks, and like I mentioned, if I open the garage door, the smell quickly dissipates and it does not come back. |
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