[QUOTE=AU GONE BAD]umm seems you have just about done most of what i can think of
i mean coil check !
leads check !
spark plugs check!
umm only thing i can suggest is maybe blown intake gasket but ya said ya did the head on it so its very highly unlikely
maybe
ecu running bad or dirty injectors
or even a eng crank sensor in some fords they had a airflow meter that might also be worth a shot !!![/
Cheers for the advice.i will check it out when I get home and get back to you