Hey everyone. My name is Alex, its my first post here. Happy to be part of the community.
A little background on my car: Its a 1964 Falcon Wagon four door, 170ci six with ford-o-matic. I bought it off my boss who drove it daily in the late 90's, and then parked it in 2001 in one of our dirty old storage warehouses. It sat there for 15 years (with dollies under the wheels so the warehouse manager could move it around) until I made an offer on it this summer and got it out of there.
I brought it to my garage, cleaned it up, replaced the leaking fuel tank, put on a new fuel sender, fuel filter, replaced the fuel pump, rebuilt the carburetor, got a new battery, and fired it up. It started right up, so I replaced the fluids, tuned the carb to a point where it was idling steadily, got the brakes working well and started driving.
At this stage, the car runs great when its cold, with the exception of a slight hesitation off idle, which I chalk up to an improperly adjusted accelerator pump. Ive been driving it to and from work, which is a 15 minute drive and its been performing flawlessly.
However, when the car warms up to operating temperature, after about 20-30 minutes of around town city traffic driving, I begin to get intermittent stalls. Almost entirely when accelerating from a stop, or going around corners. It doesnt happen at every corner and every stop, just some. It happens enough to make it difficult to drive in city stop and go traffic, which is 75% of the driving I do. Sometimes I can save the car from dying after it stalls by pumping the accelerator rapidly. Also, after the car begins stalling, when I restart it, it sometimes stalls again when I drop it into gear and load the engine.
Important note, this does not happen on the highway. I can drive for an hour and a half on the highway at a constant speed and the car will never stall. Even if I stop in traffic for 5 to 10 minutes, it performs great on the highway.
Ive narrowed it down to a few possible things:
1) Vapor lock: is the fuel boiling in the lines when the engine warms up? Im leaning away from this possibility because the car starts right up again after stalling (Usually have to press the pedal to the floor while starting to get it going)
2) Rich idle mixture: Am I dumping too much gas into the intake, and maybe its pooling up when the car is stopped?
3) Improper float hight: Maybe theres too much (or too little) fuel in the bowl, and im stalling around turns and dead starts because of it?
Could it be an ignition related thing? Ive read about how a bad coil could act up under heat and cause symptoms like this.
Id be grateful for any advice or any leads in the right direction. Thanks in advance. Im loving the Falcon so far, despite the issues.
Heres some photos:
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