Strange Knocking Sound in Engine Bay
03-18-2024, 11:46 AM
#16
RL Community Team
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Lifters tick, they don't knock. If adding SeaFoam to the oil, it should be used at a ratio of 1 ounce to each quart of crankcase capacity, so if the 997 takes 8 quarts of oil, 8 ounces of SeaFoam should be used, not the whole can, and it should only re run for 100-200 miles then the oil and filter changed.
I freed a stuck 928 Lifter using this technique.
I freed a stuck 928 Lifter using this technique.
03-18-2024, 11:49 AM
#17
Advanced
Lifters tick, they don't knock. If adding SeaFoam to the oil, it should be used at a ratio of 1 ounce to each quart of crankcase capacity, so if the 997 takes 8 quarts of oil, 8 ounces of SeaFoam should be used, not the whole can, and it should only re run for 100-200 miles then the oil and filter changed.
I freed a stuck 928 Lifter using this technique.
I freed a stuck 928 Lifter using this technique.
03-18-2024, 11:55 AM
#18
RL Community Team
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The video in post 1 when I listen to it on my PC does not sound as bad as when I first listened to it on my phone - that might be a lifter tick. The SeaFoam trick might do something for this one.
The video in post 10 has a pronounced knock and if under warranty should be scoped before that warranty expires.
The video in post 10 has a pronounced knock and if under warranty should be scoped before that warranty expires.
03-18-2024, 11:56 AM
#19
Rennlist Member
Lifters tick, they don't knock. If adding SeaFoam to the oil, it should be used at a ratio of 1 ounce to each quart of crankcase capacity, so if the 997 takes 8 quarts of oil, 8 ounces of SeaFoam should be used, not the whole can, and it should only re run for 100-200 miles then the oil and filter changed.
I freed a stuck 928 Lifter using this technique.
I freed a stuck 928 Lifter using this technique.
03-18-2024, 11:59 AM
#20
Advanced
The video in post 1 when I listen to it on my PC does not sound as bad as when I first listened to it on my phone - that might be a lifter tick. The SeaFoam trick might do something for this one.
The video in post 10 has a pronounced knock and if under warranty should be scoped before that warranty expires.
The video in post 10 has a pronounced knock and if under warranty should be scoped before that warranty expires.
03-18-2024, 12:05 PM
#21
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Sylverlee (03-18-2024)
03-18-2024, 12:48 PM
#22
I hope it's ok if I also post a recording of my own engine sound (same engine except has X51 on it). The loud ticking / knocking isn't always there, so not sure what to think about it. Keen to hear what you guys think about this: https://youtube.com/shorts/gqmqjqVJ444?feature=share
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
03-18-2024, 09:45 PM
#23
I hope it's ok if I also post a recording of my own engine sound (same engine except has X51 on it). The loud ticking / knocking isn't always there, so not sure what to think about it. Keen to hear what you guys think about this: https://youtube.com/shorts/gqmqjqVJ444?feature=share
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
Dang, I don't wanna create worries but that doesn't sound normal to me, my .2 is 167k miles and even tho it is burning some oil, it doesn't sound anything like this
Last edited by SilverFrog; 03-18-2024 at 09:49 PM.
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SilverFrog (03-18-2024)
03-18-2024, 10:24 PM
#25
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Seafoam is $8.48 for 16oz at Walmart - I use it for my boat outboard engine over past 2 years - It gets added to the Fuel
Last edited by groovzilla; 03-20-2024 at 03:57 PM.
03-18-2024, 10:25 PM
#26
Rennlist Member
I hope it's ok if I also post a recording of my own engine sound (same engine except has X51 on it). The loud ticking / knocking isn't always there, so not sure what to think about it. Keen to hear what you guys think about this: https://youtube.com/shorts/gqmqjqVJ444?feature=share
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
03-18-2024, 10:52 PM
#27
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I hope it's ok if I also post a recording of my own engine sound (same engine except has X51 on it). The loud ticking / knocking isn't always there, so not sure what to think about it. Keen to hear what you guys think about this: https://youtube.com/shorts/gqmqjqVJ444?feature=share
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
I have a few months left of extended warranty on the car, so I'm thinking about doing a bore scope in case it needs some major work.
03-19-2024, 04:19 AM
#28
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Last edited by trassalpl; 03-19-2024 at 04:19 PM.
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Thomas_ (03-19-2024)
03-19-2024, 03:19 PM
#29
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I have always heard light "ticking" sounds of about the same frequency from the top of my engine - not from the wheel well. I think that is fuel injectors. Am i correct or should I call my psychiatrist, start taking anxiety meds, drink more, sell my boat, raid my kid's college accounts, start some "Porsche's Suck" threads and prepare for an engine rebuild?
In all seriousness, don't these engines tick a little?
In all seriousness, don't these engines tick a little?
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Thomas_ (03-19-2024)
03-19-2024, 05:24 PM
#30
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Sounds like nothing to me lol.