SDV8 Tapping/knocking noise Top of the engine | |
Hi all,
I have a 2014 Range Rover L405 Vogue with the 4.4 engine. The car has developed a knocking/tapping noise coming from the top of the engine, on the left bank. Occasionally, there is also white smoke coming from the exhaust, though it’s not consistent.
The knocking sound is intermittent—it comes and goes, and when it does occur, sometimes it’s louder and other times barely noticeable. I used a stethoscope to try and diagnose the knock and found that the noise is most prominent around injectors 6 and 7.
No codes and EML is off
So far, I’ve had four injectors removed and tested—no issues found. I also removed the sensor from the high-pressure fuel pump to check for metal filings, but everything looked clean.
My next step is to remove the intake cover to inspect the rocker arms and other components in that area.
Does anyone have any idea what this could be? I’ve attached a video below—please note that the knocking sound in the video is amplified for some reason and sounds much louder than it does in real life.
Any input would be appreciated!
https://youtube.com/shorts/APsqrdwSR24
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