engine codes
 

Can you help diagnose my codes, Im getting a lot of sputtering, I installed jumper wire in the diagnostic ports and got a code 6,7,6,7 it paused for like 9 seconds and then gave a string of codes 1,1,4,3,1,4,1,8,7,9,6. I then did the engine running test, it flashed 3 times (indicating the 6 cylinder) I then cranked the steering wheel, but saw no flash to press the gas pedal and it displayed no codes after that. Its a 1989 f150, 6 cyl and a 5 speed