My car that I have just bought has a sierra 2 litre pinto which has a massive flat spot when you first put your foot down, if you stamp it down it will just die and stall.
I have checked the plugs and they do look a little lean on the ends but oily on the rest of it, leads, rotor arm, points and dizzy cap all seem good ( haven't checked the gap in the points though as I'm not sure what it should be ). Haven't checked timing as I'm not 100% sure how to do it to be honest, I have a strobe but don't know what im doing.
Just stripped and cleaned all the jets I could find in the carb and two on the outside and it still does it.
I checked to see where the mixture screw is set, and it was about one full turn from fully closed.
I'm at a loss for what to do, my guess is that because of the mixture that the carb needs a bigger idle jet. But not sure to be honest.
Any help would be much appreciated.