I have a 4.6 1997 ford motor that has 110,000 miles on it...It seems very slugish (in the morning really bad).Seems like it missing on the first start,I'll turn it off and start it back up and it cranks fine...Has a new fuel filter, new plugs,and I have always used synthetic oils.Can anybody help me with this...Any pointers or advice??? Any help would be greatly appreciated!!!