Chosen Solution
1999 Ford F-150 5.4l Triton. Driving down the road and all of the sudden major decrease in power and engine rough and loud “banging.” Checked all plugs and coils, no codes at all. No misfires according to OBD2 scan. What could cause this and no codes? Thanks.
There may be a pushrod bent or a bent valve or lifter(s) are sticking or the engine may have swallowed a valve.
