Grimm
New member
Hey guys, new member here. I have a 1966 Mustang 200 I6 with a C4 Automatic.
I've got an issue with my engine stalling out once the automatic choke is fully open. It seems to run well when about 50% open. The issue started around a month ago while I was taking it out to get gas (0 Ethanol) and the store. I got stuck in the parking lot of the store for a few minutes, every time I would put the engine in drive it would struggle to move and die almost immediately. When running and coming to a complete stop, the car would start to idle really rough and go away when I gave it gas. Once getting it home I looked all over the car for issues mostly related to timing and vacuum leaks. I hooked a vacuum tester up to the trans line and got it between 17 and 20 because my balancer is offset from my timing marks (I read that they are known to slip over time). The car fires up first try almost every time without fail.
A little back story, I got this Mustang not running in October of 2022. I have done a decent amount of work to the car. I put in a new stainless tank, stainless fuel sender, stainless fuel line and fuel pump. Replaced all the brake components (all 4 are drums). Shift linkage was taken apart and I put the plastic bushings in and cleaned all of the parts up before reattaching it. I put a new vacuum advance on the distributor with new stainless line. All new spark plugs and wires along with the ignition points and condenser were replaced. New coil. I replaced a handful of wire connectors and electrical parts. The PCV valve, grommet and hose are new. I have an autolite 1100 that was sent to UREMCO to be rebuilt. I got the car running in May of this year (2024) and drove it collectively about 800 to 900 miles between May and August. It's been garage kept since the store run that I mentioned earlier. I replaced the valve cover gasket two days ago thinking maybe the valve cover could have had a bad gasket.
I took the plugs out and cleaned them up today, there was (to me) some oil deposit showing on all 6 plugs. I started the car hoping that the last two fixes would be my answer, but the car still had the same stalling issue once the choke fully opened. The car did run a little longer than usual (a minute or two) after the plugs were cleaned. I let the car cool down and went out to start it again, making my way around with carb spray looking for any kind of vacuum leak, but to no avail. I have also tried a 50/50 dish soap and water mixture before with the same results.
Any help would be greatly appreciated, I might have left some stuff out and will try to add it in if I remember. It's been a long project for me. I'm looking into getting the engine rebuilt at my father in laws machine shop in the next year also, but I would like to enjoy the car a little more before I pull her guts and leave her sitting for a few months while I do other work to her.
I've got an issue with my engine stalling out once the automatic choke is fully open. It seems to run well when about 50% open. The issue started around a month ago while I was taking it out to get gas (0 Ethanol) and the store. I got stuck in the parking lot of the store for a few minutes, every time I would put the engine in drive it would struggle to move and die almost immediately. When running and coming to a complete stop, the car would start to idle really rough and go away when I gave it gas. Once getting it home I looked all over the car for issues mostly related to timing and vacuum leaks. I hooked a vacuum tester up to the trans line and got it between 17 and 20 because my balancer is offset from my timing marks (I read that they are known to slip over time). The car fires up first try almost every time without fail.
A little back story, I got this Mustang not running in October of 2022. I have done a decent amount of work to the car. I put in a new stainless tank, stainless fuel sender, stainless fuel line and fuel pump. Replaced all the brake components (all 4 are drums). Shift linkage was taken apart and I put the plastic bushings in and cleaned all of the parts up before reattaching it. I put a new vacuum advance on the distributor with new stainless line. All new spark plugs and wires along with the ignition points and condenser were replaced. New coil. I replaced a handful of wire connectors and electrical parts. The PCV valve, grommet and hose are new. I have an autolite 1100 that was sent to UREMCO to be rebuilt. I got the car running in May of this year (2024) and drove it collectively about 800 to 900 miles between May and August. It's been garage kept since the store run that I mentioned earlier. I replaced the valve cover gasket two days ago thinking maybe the valve cover could have had a bad gasket.
I took the plugs out and cleaned them up today, there was (to me) some oil deposit showing on all 6 plugs. I started the car hoping that the last two fixes would be my answer, but the car still had the same stalling issue once the choke fully opened. The car did run a little longer than usual (a minute or two) after the plugs were cleaned. I let the car cool down and went out to start it again, making my way around with carb spray looking for any kind of vacuum leak, but to no avail. I have also tried a 50/50 dish soap and water mixture before with the same results.
Any help would be greatly appreciated, I might have left some stuff out and will try to add it in if I remember. It's been a long project for me. I'm looking into getting the engine rebuilt at my father in laws machine shop in the next year also, but I would like to enjoy the car a little more before I pull her guts and leave her sitting for a few months while I do other work to her.
️
