Does this sound like a failed lifter? 2015 with 97k miles.

[fatmonk8]

Video 1 from engine bay

Video 2 from wheel well

 

[TollKeeper]

Has a noisy injector type of sound, but that could still be a bad lifter.

 

[fatmonk8]

Has a noisy injector type of sound, but that could still be a bad lifter.

Would a bad lifter cause a misfire?

 

[TollKeeper]

Would a bad lifter cause a misfire?

Yes

 

[fatmonk8]

Yes

So if I don't have a misfire then it isn't a lifter right?

 

[TollKeeper]

So if I don't have a misfire then it isn't a lifter right?

Depends... It could be a partially dead lifter, and causing a partial fire. Its rare, but does happen. Basically the lifter isnt opening the rocker/valve all the way, only partially. This would cause the air/fuel ratio to be off, and cause a misfire or shake in the engine. Usually this would still be picked up by the ECM thou.

 

[fatmonk8]

Depends... It could be a partially dead lifter, and causing a partial fire. Its rare, but does happen. Basically the lifter isnt opening the rocker/valve all the way, only partially. This would cause the air/fuel ratio to be off, and cause a misfire or shake in the engine. Usually this would still be picked up by the ECM thou.

I do notice a slight shake, but It wouldn't seem like anything out of the ordinary for a v8 to me. I have a scanner hooked up and I have not seen any codes for a misfire.

Someone else said it could be ticking from the brake vacuum booster pump.

 

[tom3]

Not sure what the second video is about but the erratic slapping tick sound in V1 sure sounds like a lifter/rocker arm. I'd pinpoint the side and pull that valve cover, watch for something not right.

 

[fatmonk8]

Not sure what the second video is about but the erratic slapping tick sound in V1 sure sounds like a lifter/rocker arm. I'd pinpoint the side and pull that valve cover, watch for something not right.

The second video is just from the wheel wheel as the sounds was more prominent.

 

[Trey Hardy]

Video 1 from engine bay

Video 2 from wheel well

Throw some marvel mystery oil in their
Believe it or not it’s the only reason my close to 350,000 mile stock 5.3 hasn’t blown up yet
I had a dod lifter collapse and it sounded wayyyy worse than that. A quart of mmo and running the dog shit out of it cleared it right up.
The other day it started tapping but oil was at level so I added a 1/4 bottle for ***** and giggles and again it cleared right up. How long it’ll last I couldn’t tell you but it’s working and has worked for the past 35-45,000 miles

 

[fatmonk8]

Throw some marvel mystery oil in their
Believe it or not it’s the only reason my close to 350,000 mile stock 5.3 hasn’t blown up yet
I had a dod lifter collapse and it sounded wayyyy worse than that. A quart of mmo and running the dog shit out of it cleared it right up.
The other day it started tapping but oil was at level so I added a 1/4 bottle for ***** and giggles and again it cleared right up. How long it’ll last I couldn’t tell you but it’s working and has worked for the past 35-45,000 miles

I used to use that stuff in my old Toyota. Just want to make sure I fix the problem and not bandaid it.

 

[Trey Hardy]

I used to use that stuff in my old Toyota. Just want to make sure I fix the problem and not bandaid it.

Yea well it’s definitely a band aid but it gets the job done I drive my rig 4-6 hours away if not more twice a week for work without hesitation. When it first dropped a lifter I was 4 hr from home and had to leave the following morning. The mmo got it unstuck and cleared it up and she’s been going ever since!

 

[MobileHomie]

I am sure everyone has different results...
On my 6.2 it was ten min from collapsed lifter to bent pushrod.

 

[fatmonk8]

I am sure everyone has different results...
On my 6.2 it was ten min from collapsed lifter to bent pushrod.

Wow, that's crazy.

Mine is still running and driving perfect with no misfire. ‍

 

[finston]

Exactly how mine sounded a few months back, but went away. Then came back with a vengeance.

 

[fatmonk8]

Exactly how mine sounded a few months back, but went away. Then came back with a vengeance.

Was your's lifters?

 

[finston]

Was your's lifters?

Yes, it was on cylinder 4. Going on 1 month in the shop now waiting on backordered parts.

 

[finston]

Was your's lifters?

This is what it sounded like the 2nd time around.

 

[fatmonk8]

It was a failing brake vacuum pump.

 

[Doubeleive]

It was a failing brake vacuum pump.

ya the k2's are just inherently more noisy than previous generations, makes it hard to narrow down when it starts making a "new" noise.
on mine it was the water pump getting noisy I thought for sure it was the vacuum pump as those are known to fail, so many normal noises though......