Bad engine noise!

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Did they start it without any oil? To my untrained ear and junky laptop speakers it sounds like a lifter colapsed. DOESN'T "sound" like an easy fix. I would demand the shop fix it right.
Dusty
 
How can you blame the Shop when they brought in a old overheated suv.. how many miles on suv? 150.000 or so.. dummy up..
 
Originally Posted By: fxrider
How can you blame the Shop when they brought in a old overheated suv.. how many miles on suv? 150.000 or so.. dummy up..


If it wasn't knocking before there's no reason replacing the LIM gasket and oil cooler should cause it to knock now. Before doing anything else to it I'd take it back to the shop and at least have them look it over. It could be an unrelated issue, but it could have also been an oversight during reassembly that needs to be addressed.
 
Check and make sure it isn't something like a loose heat shield. On my Ford F-150 I have a similar "tick" that drove me nuts.
(The truck was given to us from my father in law.)
I couldn't figure out what it was so I began my online research.

Turns out that the fix is to wrap the heat shield in fiberglass wrap.
I haven't bothered.

The speakers on my system are pretty decent. That tick is pretty loud. I would take it back and have them do a once over.
 
That does not sound good. Was it leaking antifreeze externally or blowing it out the exhaust? Could of warped a valve uhmmm could be a lifter though to me it sounds lower pitched than a lifter. Hope its not lower end. When you Rev the engine what does it do? Does the noise go the same speed as the engine or twice as fast?
 
Originally Posted By: chevyboy14
That does not sound good. Was it leaking antifreeze externally or blowing it out the exhaust? Could of warped a valve uhmmm could be a lifter though to me it sounds lower pitched than a lifter. Hope its not lower end. When you Rev the engine what does it do? Does the noise go the same speed as the engine or twice as fast?


From what I remember it goes twice as fast. What might that mean? The rod knocking? He did say there was antifreeze leaking externally but not internally.
And to answer the question they changed the oil and filter AGAIN after the first time. He already went back and they said he needs a new engine.
I just dont see how this could have happened with just changing the intake manifold and oil cooler hoses.
 
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I just had a shop replaced my LIM gaskets and it now has a slight tick at idle when warmed up...didn't notice it until the morning after I picked it up. Not as bad as your example but still...I know every noise my car makes and it didn't have that before it went in.

I called the shop and they said to bring it back and they'll take a look.
 
Originally Posted By: theshallot


From what I remember it goes twice as fast. What might that mean? The rod knocking? He did say there was antifreeze leaking externally but not internally.
And to answer the question they changed the oil and filter AGAIN after the first time. He already went back and they said he needs a new engine.
I just dont see how this could have happened with just changing the intake manifold and oil cooler hoses.


Ouch, it doesn't sound like he will get anywhere with the shop.

It's hard to tell from the video where the noise could be coming from. It could just be a collapsed lifter. It will be more money, but it's not nearly as catastrophic as needing a rebuild.

If it seems to be coming from the lower block, that's a bad sign. Rod knock means that engine is done.

I would recheck the oil cooler lines. It sounds like the engine got starved for oil at some point after the "repair" was done. Not trying to knock the shop too much because they may not have done anything wrong, but that's one [censored] of a coincidence.
 
Originally Posted By: chevyboy14
If the noise is twice as fast it would be the upper end . Which is better news.not good but better than the news could be


Valve train spins at half the speed of the crankshaft.
 
Originally Posted By: 01rangerxl

I would recheck the oil cooler lines. It sounds like the engine got starved for oil at some point after the "repair" was done. Not trying to knock the shop too much because they may not have done anything wrong, but that's one [censored] of a coincidence.


If I recall correctly, the oil cooler lines on this engine are just a shunt type. All the oil volume does not go through it.

By rights, the shop shouldn't have caused the noise, but may have inadvertently damaged a lifter roller with some debris, causing the noise. There is no cause for them to have to disassemble the valve train, so barring any foreign junk, I'd say it's coincidental.
 
Originally Posted By: chevyboy14
Duh.... I knew that. I just goofed it up thanks overkill for keeping me in check. Its just been one of those days.


No problem
wink.gif
 
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