66 289 Carburetor problems
My first post and I'm hoping I've put it in the right forum. I've got a 66 mustang that looks to have had a 66 C code 289 put in the car aftermarket. The VIN on the car says it's a straight 6 built in San Jose. I looked up the engine and it looks like it came out of a T-Bird.
It has the 2 barrel autoline carb. I live in Chicago so I had it in the garage from about Nov to April. It ran fine when I stopped driving it but it always (I've only had it about 2 years now) had a little hesitation when hitting the gas and I've gotten around that by feathering the gas pedal.
It starts fine and idles well, but when I drive it just wants to die. I can feather the gas pedal and keep it going but I can't really drive it.
My first thought was gas so I filled it with premium. I replaced the plugs and gapped them at 0.34. ONe odd thing was when I replaced the plugs it drove well, even without the hesitation, for about 3 miles, then it started wanting to die again.
I've tried to adjust the choke without much difference.
I've adjusted the mixture screws at the bottom of the carb, tightening them until the engine begins to cough and then backing them out a quarter turn.
I've adjusted the idle and the fast idle.
I plugged a vacuum connection that was in the back of the carb behind the choke without any effect.
I attached pictures but I have removed the choke bracket that holds the hose next to the choke to give a better view.
I'm about to pull the carb off and send it to Guaranteed Carburetors to have it rebuilt. I feel like I could do it myself but if I do and slap it back on and have the same issue I'll be back at square one.
Any ideas from you folks. Thanks.