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335i possible rod knock
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07-14-2018, 11:10 PM | #1 |
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335i possible rod knock
Hello friends,
I have recently developed an intense paranoia of rod knock in my 335i. I took this video from the inside of the car, it seems to be the loudest inside with the windows rolled up and when the car is cold. I do quite a bit of short drives but I take it for an oil change every 2.5k miles. I have a few morning stutters but never enough to trigger a fault code. I'm seriously losing sleep over this issue and I am praying it's something but a bad rod bearing. Video
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07-15-2018, 06:58 AM | #4 |
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Thank you for the reply, but you did hear the weird ticking/knocking in the video right? I am jyst kind of paranoid about it.
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07-15-2018, 07:58 AM | #5 |
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Sorry my computer is not letting me see your posted video. If you are worried about rod knock before you even try to start the car again, drain the oil and pull the oil filter.
IF the rod bearing are going you should see tiny shiny bits of metal in the filter and or oil. We had an old E36 that happened to. With our car you could hear the rod knock from up the street. It was really loud. The metal shavings will very quickly get all through the motor and destroy it. Good luck. |
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07-15-2018, 08:27 AM | #6 | |
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07-15-2018, 12:17 PM | #9 |
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07-15-2018, 01:11 PM | #10 | |
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Drives: 2007 Black/Black 335i e90
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07-15-2018, 03:17 PM | #11 |
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Drives: BSM 07 E90 335i
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Your car sounds quieter than mine does!
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07-16-2018, 10:37 AM | #13 |
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07-17-2018, 10:52 AM | #14 | |
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Drives: E90 335XI MSport, S2000
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You would not be able to barely drive the car with a rod knock problem. It would just sound like a bunch of marbles and produce barely any power. |
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07-24-2018, 08:15 PM | #15 |
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07-25-2018, 06:03 AM | #16 |
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If at load it doesnt get louder itprob isnt rod knock. Video from engine bay would be much better. N54 and esp n52 are known for air in the hydraulic lifters which is worse with some brand oils google bmw lifter bleed and follow procedure takes 5 min and no tools your sound should stop. Rod knock is more of a hollow chilling sound that is worse at cold start will statt to quiet at idle and you touch gas and comes back sec you touch gas. You will have full power early on but a high spedd pass would have increased volume and frequency of the knock so you would know by now.
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07-26-2018, 11:29 AM | #17 | |
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07-26-2018, 11:59 AM | #18 | |
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Here is engine bay vid |
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07-26-2018, 09:11 PM | #19 |
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Nah, these motors are solid; you won't have a rod knock. they're forged too.
Plenty of these cars running around with 250+k miles
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12-08-2018, 07:23 PM | #20 |
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I am getting these exact same symptoms. I do not think it is rod knock but sure is scary. haha. I am told this can be from the fuel vent valve, but have yet to replace mine.
Did you figure out what it was? |
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12-10-2018, 02:20 PM | #22 |
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https://www.e90post.com/forums/showthread.php?t=908818
listen for the clacking sound as the RPMs fall (not the valves ticking) |
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