It’s a goner, isn’t it?

[mountie]

unless that thing is idling at 2500 rpm that ain't no lifter or rod knock.

I don't really know what it is thou. but it's way to fast to be valve train, it runs at half crack rpm.

Timing gear ???

 

[Fless]

Playing card stuck in the wheel spokes with a clothespin.

Sorry, couldn't help myself. #compulsive

 

[j91z28d1]

Timing gear ???

I honestly have no idea.. it's hitting something solid forsure.. but if it was a rod bearing spun, they usually get worse really quickly, have bad oil pressure and start squeaking before they lock up.

someone said torque converter bolts or flywheel. that might be a good guess. I don't think the starter driving hitting would sounds like that. Hopefully someone has a better idea than me.

 

[Doubeleive]

Here is some open hood video for those wanting up close sound.

first thing I would do is take both belts off and see if the noise goes away, doesn't sound internal to me but hard to say from a video

 

[SpareParts]

What is it idling at? Warmed up it should be idling around 550 rpm.
That noise it to fast for a crank or rod knock if it is idling properly.

 

[rachealae]

first thing I would do is take both belts off and see if the noise goes away, doesn't sound internal to me but hard to say from a video

Thanks I’ll do that tomorrow

What is it idling at? Warmed up it should be idling around 550 rpm.
That noise it to fast for a crank or rod knock if it is idling properly.

Idling just fine…oil pressure, rpm’s. No changes in anything.

 

[rachealae]

I honestly have no idea.. it's hitting something solid forsure.. but if it was a rod bearing spun, they usually get worse really quickly, have bad oil pressure and start squeaking before they lock up.

someone said torque converter bolts or flywheel. that might be a good guess. I don't think the starter driving hitting would sounds like that. Hopefully someone has a better idea than me.

Hmm I’m bringing it to a second opinion this week. We drove it twice to a mechanic and back and no changes so far. Oil pressure, rpm’s, etc have been the same.

 

[rachealae]

Playing card stuck in the wheel spokes with a clothespin.

Sorry, couldn't help myself. #compulsive

Haha I wish that was all. That’s what I keep hearing

 

[SpareParts]

Now that i think about it a couple bad lifters could sound like that but both lifters would need to be bad on two cam lobes 180 degrees apart otherwise it would sound more like a double tap.
Unlikely but not a 0 chance

 

[mountie]

Does it smoke??

 

[rachealae]

Does it smoke??

Funny you ask. Sometimes. White smoke.
I had two mechanics check for coolant leaks twice on it because I get low on coolant on occasion. Apparently they couldn’t find anything so I gave up. When I delete AFM, it happened less frequently but still happened a couple times a year.

 

[mountie]

Maybe……

Funny you ask. Sometimes. White smoke.
I had two mechanics check for coolant leaks twice on it because I get low on coolant on occasion. Apparently they couldn’t find anything so I gave up. When I delete AFM, it happened less frequently but still happened a couple times a year.

You could be burning white smoke….. sometimes, but not enough to notice, as you drive easily ?

 

[rachealae]

I only notice it on start up

Maybe……

You could be burning white smoke….. sometimes, but not enough to notice, as you drive easily ?

 

[mountie]

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What Noise Fooled the Crap Out of Dave?

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Check this out.

 

[LsHart]

Just pull valve covers and do a jiggle test. Sounds really fast like a lifter. To me

 

[LsHart]

Longer u run it like that , the worst it'll get

 

[rachealae]

Longer u run it like that , the worst it'll get

I only ran it like that to get it to the mechanic

 

[Actifenpleinair]

Could it be something rubbing on the timing chain? Like a piece of the tensioner or a piece of the cam position sensor? I mangled two Cam sensors trying to pull them out after 250k on one and only 115k on another, both 2007 L92...

 

[mountie]

Could it be something rubbing on the timing chain? Like a piece of the tensioner or a piece of the cam position sensor? I mangled two Cam sensors trying to pull them out after 250k on one and only 115k on another, both 2007 L92...

Interesting thought….. I wonder how it runs, with that knock…..

 

[NYBRD]

My pushrod ate it and sounded like that just not as loud

My sound wasn't as bad but very similar
I just threw in a replacement rocker and pushrod some lifter additive for good measure just in case and its runing fine now