Compression Ignition Addict
Join Date: Nov 2006
Location: Butner, NC
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Always keep in mind, i am not a ford technician please, so everything said by me, is by my opinion, and what i have learned personally.
99% of all 7.3Ls have that #8 "knock" some have it worse than others, some it's just barely audible, (like mine, and then it cackles some around 1500 rpm and mild load)
All of our trucks seem to go (imagine the ticks are the engine idling)
But, when you have excessive cackle, like in the audio file, that is casue for concern, because a large amount of air IS getting into that #8 injector, and the air is coming from somewhere, the most common place being th e fuel pump inlet, the fuel filter drain o rings can also cause it too i believe.
I dont believe the exhaust is causing it to knock more persay.
I am about to fall asleep right now, sop i'll foll
ow up on this tomorrow evening
June of 1999 7.3L F-250 CCSB
Dp-Tuner F5 w/8 Tunes. Autometer Colbalt Gauges. 5" Exhaust. 2004 6.0 SCT and Headstuds 4" exhaust
2008 6.4L project truck.