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Ls1 clicking, tapping, or..... normal?

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Old Mar 31, 2021 | 03:28 AM
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Default Ls1 clicking, tapping, or..... normal?

so today I replaced my oil pressure sender and after I put the intake back in and turned it on I was excited to see the oil pressure gauge working again. I made a quick video on my phone and after re watching it obvious the car is clicking? I didn't noticed it before watching the video but now I can't stop thinking about it. to give some background on the car I bought it as a project car off my dad. the car has been sitting in in a garage for the last 4ish Years and was rarely driven. the engine has around 120,000 miles on it but was well taken care of until a few years ago. I'm trying to get it back to its former glory. I tried letting the car heat up but he clicking can still be heard on the video. I don't know what a normal ls1 sounds like? this is my first LS car. my other car is a Honda Civic that as quiet as a mouse so I have no idea what a late 90s V8 is supposed to sound like.

I made a few videos so I could get some opinions on here
this one is from a cold startup:
this one is after I let drove the car for a bit and let it warm up:
this one is in this one im reving the engine to about 3000 rpms:

I drove the car for a bit today and it drives fine and feels fine. I didn't push it because I'm afraid of doing damage.
I wanna hear your opinion since you guys have probably been around C5s and LS1 engines a lot more than I have. honestly it doesn't sound that bad in person but after I heard it in the video I can't stop thinking about it. what could it be? fuel injectors? since I had to take the manifold off to get to the oil pressure sensor? rocker arm? valve springs? valves? is it normal? am I just being paranoid?
I was planing to replace the sparkplugs and wires this week maybe that will help?
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Old Mar 31, 2021 | 08:35 AM
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The LS engines do have an inherent sound, that we refer to as the "sewing machine" sound. That's pretty much normal. Keep in mind, you have the plastic covers off, and they tend to deaden the sound of what could be the normal noise of the fuel injectors cycling. I did the rocker arm upgrade, by installing the bronze bushings, and while I still get a little of the "clatter", once I get off idle, the engine gets very quite.....but that's also with the covers in place.
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Old Mar 31, 2021 | 11:45 AM
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Originally Posted by leadfoot4
The LS engines do have an inherent sound, that we refer to as the "sewing machine" sound. That's pretty much normal. Keep in mind, you have the plastic covers off, and they tend to deaden the sound of what could be the normal noise of the fuel injectors cycling. I did the rocker arm upgrade, by installing the bronze bushings, and while I still get a little of the "clatter", once I get off idle, the engine gets very quite.....but that's also with the covers in place.
I didnt know the covers made the much of a difference ill put them on and see how it sounds. it defiantly sounds like a sewing machine.
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Old Mar 31, 2021 | 01:52 PM
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I think from the video that the phone mic is amplifying the sound of the injectors ticking but it’s difficult to say without hearing it myself.

It sounds perfect to me in the 3rd video so my take is that I don’t think anything is up with it.

Last edited by silver50; Mar 31, 2021 at 01:54 PM.
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Old Mar 31, 2021 | 03:03 PM
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Originally Posted by silver50
I think from the video that the phone mic is amplifying the sound of the injectors ticking but it’s difficult to say without hearing it myself.

It sounds perfect to me in the 3rd video so my take is that I don’t think anything is up with it.
thanks for the input! yeah Im starting to think its just the phone because it sounds fine in person
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