So that begs the question, why would cause mine to create such a racket when yours does not? Or the other user who reported that his made similar noises? I do have a scheduled visit to my local dealer to get their opinion as well.
There is a lot of noise going on for sure - any theories on what you are hearing?
Very little to gain from the audio. Certain sounds stand out at various points. A mechanic's stethoscope probing various parts of the engine would be interesting. There's so many overlapping sounds that without being able to single out sections of the assembly with a device it'd be hard to pinpoint any one thing. There's a lot of sounds.
I don’t hear anything wrong here, no direct injected engine is quiet while it’s running at 1,200 rpm with an enriched mixture to heat up the catalyst system. Anyone who claims such a thing is hard of hearing. Not one 3.5 or 5.0 that I test drove back in February was quiet from a cold start on the dealer lot. I really believe you are chasing a ghost here. All had rhythmic knocking from the catalytic converters and a whine from the trans pump.
I am coming to the realization that there is a lot more going on with this engine/trans than my 2017/6 speed version. The one noise that you don't hear here that is my biggest concern is the random grinding/hammering that I occasionally feel when driving. It has only happened a few times but it's usually when cruising along steady at 40mph in either 8th or 9th gear. It usually starts and only lasts 5-10 seconds but it sounds like either loud pumping/hammering noise - almost like the sound you hear when it hasn't fully disengaged 4wd. It has always happened on the way to work and while warmed up I can't say for sure if the trans temp is completely up to operating temp. Ambient temps last week were in the mid 20's F in the AM so it takes a while to warm up.
dont forget cylinder deactivation hardware!
My 21 5.0 has made this same sound on cold start ups since I bought it last September. I was wondering if you ever figured out where it was coming from.
This is mine right here ^^. Noisy as hell on start up. And I agree with you on the transmission. I was doing 35mph in 10th gear the other day...WTF?
The random grinding/hammering you are hearing is the front wheel ends. Mine did it when below 32* when I first got the truck. When you hear it and immediately with into 4H its goes away. There is a big topic on it in another F-150 forum.
