HELP! Engine noise ID.

[Mark247]

Hey I haveno idea what this could be I'm definitely no mechanic. Just happened on the way home from work. a loud knocking from right cylinder bank and can be heard ticking through the echaust , will upload a video tmrw (dang iPhone)
Thanks

 

[Riccochet]

is it a knock, tick or tap? Maybe a ping or a slap? Certainly not a clunk or a rock.

 

[fasthemiram12]

I had a collapsed lifter on my 11.

Put some Lucas HD oil stabilizer in there and it should go away if its lifter related.

 

[Mark247]

Here is the Video of the sound. Only could upload to youtube so please have a listen ! thanks
https://www.youtube.com/watch?v=olEDgQTbzW8&feature=youtu.be

 

[fasthemiram12]

That could be a bent rod, collapsed lifter, or dropped valve. Hard to tell from a video but your definitely gonna need to take it to the dealer for warranty.

Let us know how it turns out.

 

[Burla]

I have had lifter tick and I had it real bad, that sounds different. I would take it in immediately, sometimes if you leave something like that alone you will end up with metal pieces all over your engine. Because of the cadence, I don't "think" it is the exhaust leak, my guess would be something that is moving in cadence with the rods, hopefully it is just a rocker arm or lifter but take it in. You can spray your exhaust manifold with a fine water spray just to double check it isn't that, but to me that's internal.

 

[BlkRamRt]

that thing is loud. definitely take it to the dealer.

 

[Mark247]

I will be taking it in tonight or tomorrow. Unfortunately we are getting a wonderful snow storm today so a lot of businesses and roads are being closed.
Would hate to break down in the middle of nowhere waiting for CAA! lol
Ill check back with the problem once its figured out

 

[Mark247]

Took it into the dealer and wouldn't you know the noise stopped by the time I made it there/ go figure! One of the techs thought it would of been a collapsed lifter caused by MDS malfunctioning when it was shutting down one of the cylinders. Said it would be the first time hes seen such a thing but without the noise it would be hard to figure out whats up.

so basically they didn't wanna spend the time tearing it apart to look for something

 

[LB3711]

thats BS. Keep going back. To me its only going to get worse over time