i have fuel and spark to it, everything else runs perfect not getting any codes back from the computer

 

Then how do you know its dead? Compression test? If your getting fuel and spark w/ little or no compression than perhaps a stuck valve? Also says your running raw fuel into converter...Elaborate plz

 

ONCE AGAIN !!!!! It would be nice to know what it is you have?????????????? Year, Motor, History, Mileage, ECT !!!!! VERY hard to help when nobody knows what it is....

 

its a 98 expedition with 165000 miles on it i purchased it with the miss, hoping the worst it could be was the head, replaced all spark plugs and #6 still wouldn't fire, pulled boot off spark plug and plugged it into old spark plug, has good spark, replaced the injector, and checked for voltage to injector while it was running, checked the same as #5 that is firing, have any ideas

 

Perform a compression test. Remove cam cover and check for follower off.