Bummer it didn't solve it. If you're getting black smoke at times other than full throttle, I would guess you are over fueling. No idea if that could cause the tapping. Yeah, I know the disheartening part. Putting work into my rig and camper build to likely have a bad head gasket and/or cracked head(s). Will be doing an engine swap (7.4L BBC) but it wasn't in my plans for anytime soon.Well it seems it was all wishful thinking and hoping The tapping is still there after installing a complete set of new injectors. Seems quieter but still there. I guess I’ll have to keep messing with it.
I was told it could be a collapsed lifter but the truck was perfect snd it started out of nowhere while on the road. Wouldn’t that be something caused from the truck sitting for a long time not being ran?
I still feel like this is fuel related because I can feel and hear the knocking on the injector lines more than anywhere else. Could this be an IP issue? I started getting black smoke on the drive home, but I initially thought it was from having to keep on the throttle to keep speed on uphill climbs on the highways because after I’d get over the hills and let off the throttle it would stop. But now I notice that even when I’m driving on the street if I give it a good amount of throttle it will give off black smoke.
Can it be the guy turned the fuel up too high on the IP or the timing is off?
If I can’t figure this out I guess I’ll just keep driving it until the motor goes. It’s just really sad and disheartening after all the time and money I’ve put into this truck.
I guess I could just start trying different additives, also. I dunno.
Thanks for all the tips and support.