sand235

I just bought a 1965 Mustang with a Cobra engine 347 CI, the car is all restored, lots of new parts, new engine, runs really well etc.. After 5 min driving it I smell like gasoline, fumes...I took it to a good mechanic that I trust and he could not find any leaks under on the fuel lines or gas tank. Could it be the carburetor that is not burning the fuel properly? I have e feeling the gas its not going thru the exhaust in the right way.
I really appreciate any sugestions or opinions about it. also sorry about, I am new to muscle cars and trying to learn more how to take care this fun Mustang

sand235

]I just bought a 1965 Mustang with a Cobra engine 347 CI, the car is all restored, lots of new parts, new engine, runs really well etc.. After 5 min driving it I smell like gasoline, fumes...I took it to a good mechanic that I trust and he could not find any leaks under on the fuel lines or gas tank. Could it be the carburetor that is not burning the fuel properly? I have e feeling the gas its not going thru the exhaust in the right way.
I really appreciate any sugestions or opinions about it. I am new to muscle cars and trying to learn more how to take care this fun Mustang

proeagles

Your engine could be running really rich which your trusty mechanic should have spotted if he ran the engine.

jakebrake

to fill the passenger compartment?


that would be running beyond rich, if at all. that sounds more like a leak.

sand235

The second mechanic also did not find any leaks under or anywhere else, he thinks it maybe the carburetor adjustment or problem with it, not sending the gas properly thru the exhaust, does it make sense? The car does not choke, it runs really well, solid sounding engine with 4k miles on it. I appreciate the feedback guys...any thoughts? thanks

Chromeshadow

If your engine is running rich, the spark plugs will be black, not tan. If you hold a white rag over the end of the exhaust pipe, it will start turning black in 20 to 30 seconds.
Is this a fast back?

sand235

It is a coupe, all restored, engine with 4k miles...also I noticed it start to smell after 15 to 20 min of driving it. The impression I have is that the smell comes from the middle to the back of the car, not from the front...Thanks for the feedback

Chromeshadow

Is this your first classic? All of the old cars smelled like exhaust, most ran rich and needed frequent tuneups. It's possible that the smell is normal, just getting sucked into your car through a poorly sealed window or the trunk. I'd make sure the exhaust pipe extends past the bumper about an inch. Do you smell it more with the windows open or closed? Moving or stopped? Did you check all of the rubber seals in the doors and the trunk?

sand235

It is my first classic. I expected a little bit of smell but it is a little too much. With windows closed i feel less and stopped or moving is there the smell. Could it be a problem with the carburator? Thanks for your feedback Chromes shadow!

Chromeshadow

I think the exhaust is getting pulled in as you drive from around a seal. You might turn the fan on high with the windows closed. Might not hurt to grab a battery carbon monoxide detector for a while.
Check all of the seals, look for holes in the trunk or under the body. You can also try to block the exhaust pipe(s) and see if there is too much pressure to hold it with your hand. It will be hot, you'll need a glove. If you can block it, there is a leak.