Hoping for Good News on Your "Ticking" Sound....
Yea, i dont think it is the cats.....sniff sniff. I think it is a rod or valve or lash adjuster some how...... I did replace them all though. Going to run some sea foam through it and see if that cleans out the oil pipe in the head....other wise i might drop the oil pan and check the rods...... But you would think that it would change over 7'000 clicks.
MarkV,
Recovering Ford fan here, and official Dodge noob, so go easy on me.
And I hope I'm not breaking any forum rules here, by holding a "seance" for your (older) thread, but I'm curious as to how you made out with the "tick."
But first, I'd like to commend you on just jumping right in there, and going deeper and deeper, as needed. You got skills, Dude! And "No Fear," as they used to say. LOL
Secondly, the reason I'm interested, personally, is I'm about to travel 3 hours, to go look at a 3rd Gen. Ram 1500, with the same 1st Gen. 4.7.
And with this ticking issue seemingly being
so common to the 4.7, and the
multiple reasons people actually find out that seem to cause very similar noises, I'm a bit spooked on the 4.7L--especially given it's propensity to "sludge up," starve out and suffer catastrophic failure. (In fact, I'm thinking this truck probably does have a tick, as it seems to have been for sale for a longish-while, now.)
Also--no offense, and maybe it's just that your phone is more sensitive than the others, but of the three videos you posted, your "tick" sounded not only the loudest (IMO) but also the
heaviest. Now, I'm just a recovering Ford guy, but I had a number of Ford's "Big Sixes," i.e., the 4.9L/300 cu. in. truck engine (GREAT engine, btw...--made from about 1966 to 1996).
And when I worked at the Ford garage, I had the techs come out and listen to one "Big Six" I had that had a "tick," and they, to a man, all felt it was a bad wrist pin. I drove the truck another 20,000 miles after that (though I did no towing) and it never got any worse.
I blather on about this because my (Ford) wrist pin noise (IF that's what it was--I never did anything about it)
sounded noticeably less "heavy" than your "tick." No offense,
but your "tick" sounds, to my (untrained, hobbyist-ear) to be heavy enough to be a big-end rod knock, or a bottom-end bearing knock.
But, as I said, I'm a noob to Dodge, and these new, OHC engines, the 4.7 included.
Also, I'm so unfamiliar with the specifics of the 4.7's architecture, I was unable to identify the actual part that broke in the "self-explanatory" pics you posted, in your #17 post. Is that a cam "hold-down"/journal-end, some sort of "rocker," or...?
And, as was suggested, did a machine shop (apparently) weld it up? It looked like a small enough part that I would have thought replacement would have been cheaper--obviously, it wasn't, but I'm just curious here, as I'm trying to learn as much about the 4.7 before I decide whether or not to take the plunge.
FYI--the mileage on the truck I'm looking at is low (for the year) like yours was.
Thanks again, and I'm hoping (for everyone's sake) to hear a happy ending to your story.
Oh! And to anyone attempting to diagnose such noises: when I worked at the Ford garage, they had a system of remote microphones they could attach, and swtich channels on, while driving, to attempt to identify various types of "NVH" (
Noise,
Vibration and
Harshness).
Not being able to afford that system, I bought a simple Mechanic's Stethascope, and that thing has saved me more time and grief than I can even recall:
KD Tools Mechanics Stethoscope
Sears.com
I didn't get a KD-brand, but I probably spent about $20. (in the '90's) and got a good one, very similar to the one I linked to, above.
Old timers will (correctly) tell you you can do the same thing with a long screwdriver/bar/broomstick shoved in your ear, but the fine rod on the stethascope makes things
so much easier to pinpoint--especially around hot/greasy/MOVING engine/drivetrain parts. (I've even used it to identify bad bearings in heating boilers' circulation pumps, driveshaft carrier bearings, you name it.) LOL I can't recommend buying one strongly enough, if anyone hasn't already.
Thanks,
Aries Rising