1968 340 AVS 4425S carb problems
How's it going guy’s, a while back I posted a thread about wanting to adjust the carb on dads GTS when there were no problems. Now upon starting the car the rpm varies a decent amount (more when warm and at night when the lights are on you can see them getting brighter and dimmer, you have to power break to put it gear to keep it running) and when trying to accelerate a little more it will stumble/hesitate and can sometimes can stall out. The engine was blueprinted (To oe specs as far as we know) awhile back when his buddy owned it, and the carb appears to have been cleaned and rebuilt. From the previous thread that I posted we now know the fuel air mixture screws are down low recessed and can freeze into place (picture posted below). We are going to check to see if there are any vacuum leaks soon, but if there is no leaks should the mixture screws be adjusted (we are not sure how they were set from the rebuild). Also does anyone know if we would be able to put longer adjustment screws like on the carb pictured below? If so it would make it easier to adjust the screws and every other carb we have worked on has had that style of screw. If we have to free up the screws using fire we are going to rebuild the carb to ensure the float is good and the level is set correctly (probably would do it even if fire was not added). We would prefer not to change the carb out for it is original to the car.
I was reading this thread, now makes me think it can be the same screws set wrong.
Rough idle Carter AVS
Thank you guys in advance for your suggestions anything would help.
Joe
How's it going guy’s, a while back I posted a thread about wanting to adjust the carb on dads GTS when there were no problems. Now upon starting the car the rpm varies a decent amount (more when warm and at night when the lights are on you can see them getting brighter and dimmer, you have to power break to put it gear to keep it running) and when trying to accelerate a little more it will stumble/hesitate and can sometimes can stall out. The engine was blueprinted (To oe specs as far as we know) awhile back when his buddy owned it, and the carb appears to have been cleaned and rebuilt. From the previous thread that I posted we now know the fuel air mixture screws are down low recessed and can freeze into place (picture posted below). We are going to check to see if there are any vacuum leaks soon, but if there is no leaks should the mixture screws be adjusted (we are not sure how they were set from the rebuild). Also does anyone know if we would be able to put longer adjustment screws like on the carb pictured below? If so it would make it easier to adjust the screws and every other carb we have worked on has had that style of screw. If we have to free up the screws using fire we are going to rebuild the carb to ensure the float is good and the level is set correctly (probably would do it even if fire was not added). We would prefer not to change the carb out for it is original to the car.
I was reading this thread, now makes me think it can be the same screws set wrong.
Rough idle Carter AVS
Thank you guys in advance for your suggestions anything would help.
Joe
