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Have an 06 Lexus 430 with 73k miles, recently developed an…

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Have an 06 Lexus 430...
Have an 06 Lexus 430 with 73k miles , recently developed an intermittent light “knocking” noise , appears to be conning from the left engine bank ,, not constant .. what are your thoughts ,, no check engine light , engine runs smooth thanks. HW
Submitted: 7 months ago.Category: Lexus
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Answered in 42 minutes by:
12/21/2017
Lexus Mechanic: FIXITMAN, Master Technician replied 7 months ago
FIXITMAN
FIXITMAN, Master Technician
Category: Lexus
Satisfied Customers: 17,611
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Hello my name is***** you tell me if the knocking is consistent when you rev the engine? Is it different from when the engine is cold to when it is hot?
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Customer reply replied 7 months ago
Can’t hear it when u Rev engine .. recent “. Knock” does not appear to change much if colder or warmed .. H
Lexus Mechanic: FIXITMAN, Master Technician replied 7 months ago
Thank you. With that few miles if the engine is well taken care of, I do not think that you have a serious internal engine problem. I have seen issues with the valve timing system being worn causing this type of noise as well as some internal carbon build up. I usually start by removing the timing cover and checking for any worn components. I will typically also try removing the carbon from the engine by running some sea foam through it. Are you planning on fixing this yourself?
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