I've been tracking down a knocking/tapping noise from my 7.3 powerstroke - stock minus turbo back exhaust system.
My truck is a 1996 F350 7.3 dually 2wd with 195000 miles on her.
So far I have replaced the leaking fuel pump
Replaced the filter housing and filter
Replaced the burnt injector harness and valve cover Gaskets
Replaced the glow plugs with new motorcraft plugs
Changed the oil and filter as well as the oil in the HPOP reservoir - I also added Archoil to see if it would quieten down the injectors from stiction
Now I have two noises one that sounds like a gas lifter tick and another deeper knocking noise
I have done an injector buzz test and they are all buzzing good with no lazy buzzes but it did throw an error
Also done a cylinder contribution test and it passed
I ran another test and it came back with p0476
I also did some acceleration runs monitoring my icp pressure and it seems I top out at 2400psi
Another question I have is what is this fitting on my turbo for? - there is exhaust coming out of it and i dont know what was hooked up to it.
There is a guage on my dash that doesn't work and it says brake pressure it's a BD Diesel guage and I do have an exhaust Brake installed from BD Diesel is that fitting on that turbo where the guage ties into?
I pulled the valve covers and ran the truck while watching the oil deflectors on each injector and there is a small trickle of oil coming out of the injectors - not sure how much should be coming out.