P0304 Code

[macleanflood]

Fuel trim and vacuum would be a good start. O2 voltages and timing values maybe.

-Mac

 

[Alatex]

Fuel trim and vacuum would be a good start. O2 voltages and timing values maybe.

-Mac

Ok I’ll report back

 

[Alatex]

Thought I would give an update on this thread to finish it off. Took the Jeep to a shop and the findings were several collapsed lifters. Initially with the valve cover off the everything looked great while running but closer inspection showed a good bit of lateral movement on multiple lifters. Not the outcome I hoped for but a top end rebuild is underway.