I borrowed back the car to take advantage of this and next week's spectacular weather here in the DC area. Those new needle valves and floats are arriving late next week. Until then I'm driving!
An apology. I think I misspoke re the brand/type of carbs on the car. They are dual EMPI 34s. Does this change the recommended pressures everyone is talking about?
I drove the car yesterday. Some symptoms. After warming up, it would stall when approaching or sitting at lights or stop signs - unless I actively revved the motor. The idle was much less than 1000. No faultering when I accellerated. Car started quickly after a stall.
Remember, both carbs have been rebuilt with kits, cleaned, etc. Only the floats need replacing.
After returning home after that drive, I checked the regulator and changed from over 3 to a little less than 2. Adjusted both idle screws to raise warm running motor to around 1000 rpms. Took another ride. Car backfires softly on deacceleration. Not badly but something new. Also, when I accelerate there is a distinct faltering feel when shifting up through the gears -- particularly between 2 and 3. If I floor it, there is that delay for a second or two.
I raised my fuel regulator this morning to 2.5 psi and will try the car again soon.
Marshall