N55 engine knock on warm up

kokuwow · 05-17-2021, 03:45 PM

Hi guys,

I bought M2 F87 N55 .Car is just 37.000 miles and have some strange noise.Car is imported and no was start for maybe 2 or 3 months.
When car is come in my country we start the car and everything was good on cold start.
When car is warm on operative temperature start to make some strange noise, but only when you release gas pedal.Maybe piston , rod , bearings , valvetronic , old oil and etc .Please if some of you have experience to share comment

This is video :

David1 · 05-19-2021, 11:30 AM

Classic rod knock. With the car in the air have someone rev it up a little just like you did in your video and place a big screwdriver on the oil pan and place the big end to you ear and you will hear it plain as day and maybe even feel it. Drain the oil and see if it sparkly.

XutvJet · 05-19-2021, 11:52 AM

Yes, very likely rod knock. Knocking when coming off the throttle in neutral is a common sign of rod knock.

///M TOWN · 05-19-2021, 11:55 AM

Horrible

I hope there is some sort of positive outcome

EDWYER · 05-19-2021, 10:01 PM

Not good, not good at all.

kokuwow · 09-19-2021, 09:59 AM

Hi

Was engine damaged with copart inside on filter.

kokuwow · 09-19-2021, 10:01 AM

Yes inside in filter have a lot of copart.

My mehanic told me to replace engine.

kokuwow · 09-19-2021, 10:14 AM

Quote:

Originally Posted by XutvJet

Yes, very likely rod knock. Knocking when coming off the throttle in neutral is a common sign of rod knock.

Yes

akkando · 09-19-2021, 01:29 PM

Quote:

Originally Posted by kokuwow

Yes inside in filter have a lot of copart.

My mehanic told me to replace engine.

Sorry that's terrible

05-17-2021, 03:45 PM	#1
kokuwow New Member 18 Rep 14 Posts Drives: M2 F87 LCI N55 , M3 E92 Join Date: May 2021 Location: Spain iTrader: (0)	Hi guys, I bought M2 F87 N55 .Car is just 37.000 miles and have some strange noise.Car is imported and no was start for maybe 2 or 3 months. When car is come in my country we start the car and everything was good on cold start. When car is warm on operative temperature start to make some strange noise, but only when you release gas pedal.Maybe piston , rod , bearings , valvetronic , old oil and etc .Please if some of you have experience to share comment This is video : Last edited by kokuwow; 05-17-2021 at 04:45 PM..
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05-19-2021, 11:30 AM	#2
David1 Brigadier General 814 Rep 3,953 Posts Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: Columbus, OH iTrader: (1)	Classic rod knock. With the car in the air have someone rev it up a little just like you did in your video and place a big screwdriver on the oil pan and place the big end to you ear and you will hear it plain as day and maybe even feel it. Drain the oil and see if it sparkly. __________________ 2021 M2 Comp Sunset Orange \|Black with orange Stitching Dakota Leather\|Executive Pkg\|DCT
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05-19-2021, 11:52 AM	#3
XutvJet Major General 5554 Rep 5,372 Posts Drives: 2011 Cayman Base, 2016 M235 Join Date: Mar 2016 Location: Kansas City iTrader: (-1)	Yes, very likely rod knock. Knocking when coming off the throttle in neutral is a common sign of rod knock. __________________ The forest was shrinking, but the Trees kept voting for the Axe, for the Axe was clever and convinced the Trees that because his handle was made of wood, he was one of them.
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05-19-2021, 11:55 AM	#4
///M TOWN . 16539 Rep 8,424 Posts Drives: M GmbH Join Date: Aug 2018 Location: North America iTrader: (0) Garage List 2018 M2 [8.82]	Horrible I hope there is some sort of positive outcome __________________ ///
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05-19-2021, 10:01 PM	#5
EDWYER Yoda of mods 1674 Rep 3,006 Posts Drives: X5 RWD Join Date: Feb 2018 Location: NC iTrader: (40) Garage List 2015 X5 RWD [0.00] 2016 BMW M2 [10.00]	Not good, not good at all. __________________ Current: 2020 Explorer ST (Agate Black Metallic), F15 SGM RWD F87 AW (retired) F30 SBM 316rwhp/440rwtq (retired) Follow me on Twitter: https://twitter.com/EdwyerCLT YT: https://www.youtube.com/@DWYERGARAGE/videos
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09-19-2021, 09:59 AM	#6
kokuwow New Member 18 Rep 14 Posts Drives: M2 F87 LCI N55 , M3 E92 Join Date: May 2021 Location: Spain iTrader: (0)	Hi Was engine damaged with copart inside on filter.
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09-19-2021, 10:01 AM	#7
kokuwow New Member 18 Rep 14 Posts Drives: M2 F87 LCI N55 , M3 E92 Join Date: May 2021 Location: Spain iTrader: (0)	Yes inside in filter have a lot of copart. My mehanic told me to replace engine.
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