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      04-24-2021, 03:13 PM   #1
apexxx6789
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2007 335XI ticking noise from engine

Vehicle developed a ticking noise from what seems to be cylinder 6. No issues with idle of drivability. Seems to be rpm dependent but after 2k rpm noise is drowned out. Originally I thought it was an injector since feeling the fuel line on 6 the pulsing was different from the rest. Just replaced #6 injector with a used index9, ticking is still there but pulsing feels the same across all injectors. Has anyone experienced this, need to do a valve cover gasket and would like to be someone prepared if additional items need to be taken care of.

https://photos.google.com/photo/AF1Q...uDJCEV_smZNvEl
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      04-24-2021, 04:33 PM   #2
E93Dude
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Post the actual picture if you want more folks to understand your situation. Not everyone has a google account.

The ticking noise sounds like your lifters under the valve cover. If you are going to replace that gasket anyway, its an excellent time to inspect them to see if there is some obvious signs of wear. But before you go that, you might consider adding some lifter quietening fluid into the oil and see if the extra lubricants solves your noise issue. Noisy lifters can be "felt" all across the valve cover, including along the fuel rails. LiquiMoly, Lucas, and others make some good additives for this issue.
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Last edited by E93Dude; 04-24-2021 at 04:39 PM..
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      04-24-2021, 04:56 PM   #3
apexxx6789
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Thanks for the input E93dude.

Adding Video YouTube link for what the noise sounds like.

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