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25/01/2022 12:02 pm
Topic starter
Hello, my Lexus has a light knocking on light acceleration, about 10% of the time. No audible knocking under hard acceleration.
108,000 miles, always had synthetic oil, does not take oil. Timing belt changed 3 years ago.
No codes
Premium fuel from Costco (top tier)
No mechanical issues over the entire life of the car (original owner), except for replacement of drive belt tensioner.
Any ideas??
1 Answer
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25/01/2022 12:27 pm
Knocking sometimes indicates the ignition timing is too advanced and may be an indication of a stretched timing chain, or a cam positioning or crank positioning sensor malfunction.
