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My 69 350/300hp engine came with a 73 carb (7043213). First question is, does this carb work well with this engine? After a drive, the garage always strongly smells of gas after I park it. Any thoughts on what could cause that strong gas smell afterwards? Secondly, is the throttle cable properly attached to the cable attachment bracket (doesn’t even look like proper 69-73 cable support bracket to me )? The AIM shows the cable flange sits in front of the hold down clamp, not behind it like I have. Any comments would be welcome. Just trying to get this straightened out..... Thanks.
The flange is in the proper location.
Gasoline smell is a leak.
Have you checked the fuel lines from the carburetor all the way back to the tank.
Is the smell greater after a full fill up?
The cork gasket between the neck and tank can leak.
MelWff.....Thanks for the info on the cable. I just didn’t think it looked like the AIM illustration, even tho I thought it was good, but just wanted to make sure. Regarding the gas smell, I think it comes from the engine area....there is no leaking gas anywhere as far as I can tell. I wonder if the carb is leaking gas into the manifold after it sits for a while?
Thanks. How would you fix the fuel boiling issue, if that’s the problem? If the fuel vapor canister, how often does that require replacement? How do you determine if it’s bad?
Thanks. How would you fix the fuel boiling issue, if that’s the problem? If the fuel vapor canister, how often does that require replacement? How do you determine if it’s bad?
Thanks. How would you fix the fuel boiling issue, if that’s the problem? If the fuel vapor canister, how often does that require replacement? How do you determine if it’s bad?
Vapor lock or fuel boiling issue was fixed in my car by isolating the fuel line and installing a carburetor hear shield (Holley in my case)
The Fuel vapor canister last a bunch of years, however if yours has the original charge and the fuel vapor separator has allowed fuel to pass thru it you should replaced the existing activated carbon.
Thanks. How would you fix the fuel boiling issue, if that’s the problem? If the fuel vapor canister, how often does that require replacement? How do you determine if it’s bad?
There is no canister on a 1969 or any kind of evaporative control system so dont waste your time looking for something the factory never installed.
I asked in an earlier post if this only happens when the tank is close to full?
I also just confirmed there is no vapor canister on a 69! Usually have about a half tank of gas in car. Only time I ever top it off is for storage purposes. Funny thing is I had a 70 years back that also smelled up the garage just like this one. I think it has something to do with the carb, but I’m going to do a visual and smell test from the tank to the carb to see if I can isolate it better. As far as the carb issue, I think the carb to manifold gasket is not correct, and the proper gasket and heat shield could do the trick. Thx again to all for the advice!
Replace any rubber fuel lines with lines designed and specified for modern fuel. Fuel these days will permeate right thru the walls of old rubber gas lines, Holley and Napa have these called Vapor Guard and Barricade. They do need their own fittings. Some fuel smells for this old rubber stuff and will not show a leak.
Gasket on gas cap is good. Fuel lines all good. However, I confirmed gas is boiling in carb after shut down and previous owner has totally incorrect carb to manifold gasket installed. Correct gaskets and heat shield on order! Thx again for everyone’s input.
69 350 Throttle Cable Attachment
