Blew my motor....

OmidHariri · 02-12-2015, 07:27 PM

Yep, you read that title right. Blew my damn motor at 118k miles. Car was running smoothly as usual. Turned it on one night and the damn thing was misfiring. Was expecting a bad ignition coil but took it in the shop and after some investigating, my mechanic suspects that the valve under the spark plug in cylinder 6 broke, got sucked into the cylinder, and destroyed it....

My car is an automatic and even he, a bmw certified technician, said hes never seen this happen on an n52, especially with only 118k miles.

Was quoted at the cheapest to replace the whole cylinder 6 system and have it re bored for 1600... But i may just attempt to sell the car as is and get my a n54/55.

Also, its possible i may have to swap the engine... Man this is just shitty luck.

:conf used2

StealYourFace · 02-12-2015, 07:47 PM

That sucks, I've followed this forum for a long time and have never seen an n52 let go.

The e90 m3 forum on the other hand

Inline · 02-12-2015, 07:48 PM

Good excuse for a motor swap if you ask me. Sorry to hear about you car man. GL

Volasko · 02-12-2015, 07:57 PM

You said your mechanic "suspects", did he prove anything with a scope? I find it hard to believe that a valve would let go with normal driving, especially with an AT. I dunno I would make sure it is proven that its completely gone.

FriedPiston · 02-12-2015, 08:13 PM

Sorry to hear that. Maybe it's time for an electric "motor" swap...

smithf80 · 02-12-2015, 09:47 PM

That sucks. Sorry to hear.

coriolis14 · 02-12-2015, 09:56 PM

Quote:

Originally Posted by Volasko

You said your mechanic "suspects", did he prove anything with a scope? I find it hard to believe that a valve would let go with normal driving, especially with an AT. I dunno I would make sure it is proven that its completely gone.

+1

631twentyeighteye · 02-12-2015, 10:28 PM

I see you have a 330i. did a Disa valve let go and fall into the valvetrain? I've heard of that happening before, hence the GAS kit coming out to resolve the longterm issue.

mike3000fl · 02-13-2015, 12:00 AM

Quote:

Originally Posted by 631twentyeighteye

I see you have a 330i. did a Disa valve let go and fall into the valvetrain? I've heard of that happening before, hence the GAS kit coming out to resolve the longterm issue.

This is what I was going to ask.

E46driver · 02-13-2015, 12:43 AM

Looks like its time for an s85 swap....lol i kid i kid, but wow blown n52 at just 118k! did you buy the car 2nd hand or are you the original owner?

GoRomeo · 02-13-2015, 12:44 AM

Dang. Interesting! Gotto watch out. You probably ran it with low oil. Thanks for sharing.

hassmaschine · 02-13-2015, 08:59 AM

pop the valve cover and see if a valve is stuck open. I assume he's done a leakdown & compression test?

m_thompson · 02-13-2015, 11:57 AM

Quote:

Originally Posted by hassmaschine

pop the valve cover and see if a valve is stuck open. I assume he's done a leakdown & compression test?

Maybe with a piece of the DISA flap stuck under the valve.

Three_thirty_I · 02-13-2015, 03:59 PM

Also keen to know exactly has gone wrong here. Sounds very strange! Very unfortunate of course!

cdgatti · 02-13-2015, 06:38 PM

Definitely get another opinion on exactly what happened before shelling out anything for a repair. If it is indeed what you mechanic says, and he is willing to do it for $1600, I would leap at the chance.

Efini · 02-13-2015, 10:01 PM

Dang didn't think something like this can happen to the n52. For sure let us know what you hear from a second or third mechanic.

02-12-2015, 07:27 PM	#1
OmidHariri Second Lieutenant 27 Rep 278 Posts Drives: 2006 BMW 330i Join Date: Dec 2012 Location: San Fernando Valley iTrader: (0)	Blew my motor.... Yep, you read that title right. Blew my damn motor at 118k miles. Car was running smoothly as usual. Turned it on one night and the damn thing was misfiring. Was expecting a bad ignition coil but took it in the shop and after some investigating, my mechanic suspects that the valve under the spark plug in cylinder 6 broke, got sucked into the cylinder, and destroyed it.... My car is an automatic and even he, a bmw certified technician, said hes never seen this happen on an n52, especially with only 118k miles. Was quoted at the cheapest to replace the whole cylinder 6 system and have it re bored for 1600... But i may just attempt to sell the car as is and get my a n54/55. Also, its possible i may have to swap the engine... Man this is just shitty luck.:conf used2
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02-12-2015, 07:47 PM	#2
StealYourFace Lieutenant Colonel 261 Rep 1,794 Posts Drives: F30 328i M 6mt, E36 M3 Join Date: Jul 2009 Location: Shakedown Street, Buffalo NY iTrader: (1)	That sucks, I've followed this forum for a long time and have never seen an n52 let go. The e90 m3 forum on the other hand __________________
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02-12-2015, 07:48 PM	#3
Inline First Lieutenant 299 Rep 306 Posts Drives: E90 M3 Zcp Join Date: Mar 2014 Location: Kentucky iTrader: (0) Garage List 2006 E90 330i [10.00]	Good excuse for a motor swap if you ask me. Sorry to hear about you car man. GL __________________ E90 330i, E90 335i, E91 328i, E90 M3, E53 X5
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02-12-2015, 07:57 PM	#4
Volasko Colonel 705 Rep 2,605 Posts Drives: 06 330i E90, 18 530xe G30 Join Date: Dec 2010 Location: Toronto iTrader: (2) Garage List 2018 BMW 530e M Sport [9.00] 2006 BMW E90 330i [8.28]	You said your mechanic "suspects", did he prove anything with a scope? I find it hard to believe that a valve would let go with normal driving, especially with an AT. I dunno I would make sure it is proven that its completely gone.
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02-12-2015, 08:13 PM	#5
FriedPiston Colonel 1973 Rep 2,711 Posts Drives: Scraper Join Date: Oct 2013 Location: East Oakland, CA iTrader: (26)	Sorry to hear that. Maybe it's time for an electric "motor" swap...
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02-12-2015, 09:47 PM	#6
smithf80 Major General 2809 Rep 5,316 Posts Drives: G80 M3 6MT Join Date: Mar 2014 Location: Long Island, NY iTrader: (1) Garage List 2022 G20 330i [9.00] 2018 F80 M3 [9.75]	That sucks. Sorry to hear. __________________ Scott, Partner Insight Automotive Consulting Click HERE for all discounted BMW New Car Pricing Click HERE for all BMW In Stock Inventory Specials Call/Text: 516-416-5481 Email: scott@insightautoconsulting.com
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02-12-2015, 10:28 PM	#8
631twentyeighteye Colonel 198 Rep 2,239 Posts Drives: 08 335i Join Date: Aug 2012 Location: Long island iTrader: (7)	I see you have a 330i. did a Disa valve let go and fall into the valvetrain? I've heard of that happening before, hence the GAS kit coming out to resolve the longterm issue. __________________ 08 e93 335i MT
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02-13-2015, 12:43 AM	#10
E46driver Captain 78 Rep 739 Posts Drives: 2009 E92 N51 328i Join Date: Jan 2012 Location: Rowland Heights iTrader: (4)	Looks like its time for an s85 swap....lol i kid i kid, but wow blown n52 at just 118k! did you buy the car 2nd hand or are you the original owner? __________________ 2009 Alpine White E92 N51 328i Automagic \| Premium & Sport Pkg. \| Coral Red/Black Dakota Leather Interior \| M-Spor \| BMW Performance Exhaust \| Active Autowerke Headers \| BBS CH-R \| CPS Front Lip \| Performance Front Grills \| 888Concepts Custom Headlights (GONE) 2011 Alpine White E90 N55 335i Automagic
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02-13-2015, 12:44 AM	#11
GoRomeo Brigadier General 964 Rep 3,854 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [9.50] 2006 330i [6.75]	Dang. Interesting! Gotto watch out. You probably ran it with low oil. Thanks for sharing.
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02-13-2015, 08:59 AM	#12
hassmaschine Major General 3971 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	pop the valve cover and see if a valve is stuck open. I assume he's done a leakdown & compression test?
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02-13-2015, 03:59 PM	#14
Three_thirty_I Lieutenant Colonel 200 Rep 1,834 Posts Drives: '05 E90 330i Manual Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2005 BMW E90 330i [0.00]	Also keen to know exactly has gone wrong here. Sounds very strange! Very unfortunate of course! __________________ BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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02-13-2015, 06:38 PM	#15
cdgatti Colonel 255 Rep 2,547 Posts Drives: e90 328i Join Date: May 2011 Location: KY iTrader: (4)	Definitely get another opinion on exactly what happened before shelling out anything for a repair. If it is indeed what you mechanic says, and he is willing to do it for $1600, I would leap at the chance.
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02-13-2015, 10:01 PM	#16
Efini Silent Service 100 Rep 976 Posts Drives: BMW Join Date: Jun 2013 Location: Orange County, CA iTrader: (2)	Dang didn't think something like this can happen to the n52. For sure let us know what you hear from a second or third mechanic.
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