I have a 68 Mustang Coupe with a 347 stoker that keeps stalling when i come to a stop. If i rev the engine right before i stop it sometimes doesn't shut off. I took it to a mechanic and he has checked the timing and the carb and says they are fine, he is currently still trying to figure it out and its been two week. Below is a list of what the car has please excuse the non technical spec list.
It will sit still at an idle around 1000 rpm, does not try to pull forward, the only issue is sometimes if i hit the gas it wont rev up it will kinda bog down or hesitate, when i hit the gas right after it will rev up like its suppose to,
Stall converter I’ll have to look into it, not to sure
I am able to check the fuel pressure it reads 6 1/2 psi,
im not 100% sure if it have a vacuum leak but if im not mistaking i only have 3 lines on my car "Intake manifold to brake booster, distributor to the front port of the carb, and from the rear of the carb to valve cover,
Since you have a manual tranny then you wont have a stall converter. That's only for automatics.
You can have a vacuum leak at the base of your carburetor too, not just a line. Could be a leaking gasket or the base is not seated good or even a cracked carb base plate. Check for leaks around the carb base by squirting carb cleaner around it while its running. If it changes rpm while spraying then you are leaking/sucking air around the base. Check for cracks in your hoses if they aren't new.
Are you running a vacuum advanced distributor?
Good morning, So a little update, I just got my car back from the mechanic yesterday, he told me that he check the timing, the carburetor and even hooked it up to a wide band o2 sensor and said that everything was reading fine. After three weeks at his shop i got a little frustrated so i picked it up. I again checked for vacuum leaks no issue there, i checked the float levels and they are both setting at mid range in the site glass. Yesterday i decided to give holley a call and ask a few questions and ended up purchasing a couple of items after explaining my issue to the techs, they recommended a new 8.5 power valve, 37 fuel nozzles, and a new pump cam orange in the #1 position. I plan on doing one at a time and see if either of them makes any difference. Other than that the car is coming together nicely. I installed new rear shocks, rear gt valance, trim around the grille, marker lights in the front, all in order to hopefully be able to enter the Spanish Trail Average joe car show in Crestview FL on the 21April18 as a work in progress car and win an award, we shall see. If you guys have any recommendations please let me know, thanks and have a good one.