hi ford guys and gals, got a problem, i have a 66' fairlane with a 289, and everytime the engine warms up (180-190), the engine begins to stumble or virbrate on light acceleration. i have no idea what the problem could be, i've changed my plugs, wires, coil, timed it, all just leaving me disappointed. any one have any ideas of what it could be?
thanks
sean
It sounds like you are having a lean condition in the carb. With the engine off and warm, close you carb screws down to seat (gently). As you close them count how many turns it takes to close. Open the screws 2 1/2 turns each and start the car. Go thru the adjustment procedure for your carb. If none of this works or the engine runs worse, close the screws again and reset them to the original positions. Also, when the engine is cold the butterfly on the carb is closed shutting down air to your mix, if readjusting your carb doesn't help, you could have a vacuum leak some where in the carb or vacuum lines.
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