N54Tech.com - International Turbo Racing Discussion
Go Back   N54Tech.com - International Turbo Racing Discussion > Model-Specific Engine Tuning & Modification Discussion > N54
Reload this Page Finally found the root cause of my smoking and oil consumption problem...
Reply
 
Thread Tools Search this Thread Display Modes
(#26)
Old
ShocknAwe ShocknAwe is offline
Senior Member
 
Posts: 775
Join Date: Sep 2012
Car: 135i
Default 08-25-2015, 04:10 PM

Sorry if it has been mentioned already, but what was determined to be the cause? Anything those of us not seeing issues can do preventatively? I'd love to avoid this. If you can't post here, please PM me.

Obviously if it's rod failure then not much to do.. but is that the cause, or another symptom?


2010 135i M-Sport 6MT Jet Black
N54 | Build Thread
Reply With Quote
(#27)
Old
_ink's Avatar
_ink _ink is offline
Senior Member
 
Posts: 530
Join Date: Nov 2012
Car: 335i DCT
Default 08-25-2015, 04:30 PM

Quote:
Originally Posted by ShocknAwe
Sorry if it has been mentioned already, but what was determined to be the cause? Anything those of us not seeing issues can do preventatively? I'd love to avoid this. If you can't post here, please PM me.

Obviously if it's rod failure then not much to do.. but is that the cause, or another symptom?
If you read the OP's post properly, you would read that he suspects injector stuck open.
Reply With Quote
(#28)
Old
livnpaintball2 livnpaintball2 is offline
Junior Member
 
Posts: 258
Join Date: Jul 2013
Car: 135
Default 08-25-2015, 05:01 PM

Quote:
Originally Posted by AUbeast86
I'm rebuilding the engine but going back stock lower end.
Why a stock lower? Spend the extra grand and get good rods!


2016 Mustang GTPP Whipple! 650rwhp, easy..


08 135i-sold!!
DCI
JB4 Iso5
Dp
VVT stage1
Berk cb
7" intercooler
Chargepipe
Wavetrac

Thor 12.9 mega motor installed!
Reply With Quote
(#29)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-25-2015, 05:17 PM

Quote:
Originally Posted by livnpaintball2
Why a stock lower? Spend the extra grand and get good rods!
The stock lower end is more than sufficient for my power goals. Don't think you're immune to nuking your engine just because you have forged rods. Hydro lock will bust any engine. Diesels see it all the time due to failed injectors.
Reply With Quote
(#30)
Old
ShocknAwe ShocknAwe is offline
Senior Member
 
Posts: 775
Join Date: Sep 2012
Car: 135i
Default 08-25-2015, 06:29 PM

Quote:
Originally Posted by _ink
If you read the OP's post properly, you would read that he suspects injector stuck open.
Ah, glossed over the hydrolock comment, thanks. On the other hand, straight answers and less attitude and/or drama next time would be great. Get enough of that bull**** on bimmerpost.


2010 135i M-Sport 6MT Jet Black
N54 | Build Thread
Reply With Quote
(#31)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-25-2015, 06:58 PM

Quote:
Originally Posted by ShocknAwe
Get enough of that bull**** on bimmerpost.
Exactly why I never go over there. N54tech is home field for me
Reply With Quote
(#32)
Old
Optigrab Optigrab is offline
Junior Member
 
Posts: 61
Join Date: Jul 2015
Car: 08 135i 6AT
Default 08-25-2015, 07:48 PM

I'm sorry for your bad luck man.
I know there have been lots of injector problems and revisions leaking, not providing a fuel etc.

is this the first time and injector has had a catastrophic failure?
Reply With Quote
(#33)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-26-2015, 04:58 AM

Quote:
Originally Posted by Optigrab
I'm sorry for your bad luck man.
I know there have been lots of injector problems and revisions leaking, not providing a fuel etc.

is this the first time and injector has had a catastrophic failure?
Thanks man. No worries. I look at it as an opportunity to learn something new.
Reply With Quote
(#34)
Old
wtfmarine's Avatar
wtfmarine wtfmarine is offline
Junior Member
 
Posts: 154
Join Date: Feb 2012
Car: 2007 BMW 335i
Default 08-26-2015, 05:26 AM

I told you from the beginning its was a bent rod.


07 335i sleeper - PT5858 single turbo - stock exhaust - stock wheels
Reply With Quote
(#35)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-26-2015, 05:42 AM

Quote:
Originally Posted by wtfmarine
I told you from the beginning its was a bent rod.
Lol
Reply With Quote
(#36)
Old
Optigrab Optigrab is offline
Junior Member
 
Posts: 61
Join Date: Jul 2015
Car: 08 135i 6AT
Default 08-26-2015, 09:04 AM

Was there a inspection with a oscilloscope done at any point?
Reply With Quote
(#37)
Old
boost junkie boost junkie is offline
Junior Member
 
Posts: 177
Join Date: Jul 2013
Car: bmw
Default 08-26-2015, 11:15 AM

Quote:
Originally Posted by Optigrab
Was there a inspection with a oscilloscope done at any point?
Do you mean a bore scope?
Reply With Quote
(#38)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-26-2015, 11:55 AM

No to the bore scope. Leak down and compression tests are supposed to be the "be all end all" of engine health indicators so I didn't see the need. Plus, even with the head off, it was still very difficult to see the height difference of the #1 piston at TDC. Only through the PCV modification was I able to determine that it was the lower end. I suspected a broken or fused oil control ring but it wasn't until I completely disassembled the piston did I see the bend in the rod.

Last edited by AUbeast86; 08-26-2015 at 12:03 PM..
Reply With Quote
(#39)
Old
Optigrab Optigrab is offline
Junior Member
 
Posts: 61
Join Date: Jul 2015
Car: 08 135i 6AT
Default 08-26-2015, 02:53 PM

Quote:
Originally Posted by boost junkie
Do you mean a bore scope?

Yeah lol sorry working on a side project with a oscilliscope so it was on my mind
Reply With Quote
(#40)
Old
Optigrab Optigrab is offline
Junior Member
 
Posts: 61
Join Date: Jul 2015
Car: 08 135i 6AT
Default 08-26-2015, 03:11 PM

I'm surprised there's not a hole in your block. The other hydrolocked threads have seen blew a hole in the block
Reply With Quote
(#41)
Old
_ink's Avatar
_ink _ink is offline
Senior Member
 
Posts: 530
Join Date: Nov 2012
Car: 335i DCT
Default 08-26-2015, 06:04 PM

It would be interesting to know what version injectors had caused this if you have it handy.
Reply With Quote
(#42)
Old
erichale's Avatar
erichale erichale is offline
Junior Member
 
Posts: 397
Join Date: May 2014
Car: 335i coupe
Default 08-26-2015, 06:14 PM

And whether your failed injector was factory or aftermarket like (RockAuto)?


07 335i AT/CUSTOM 6870 GEN2 ST/VAC ENGINE AND STAGE 3 HEAD/FABFACTORY INTAKE W/PI/1000HP AD FMIC/EOS BILLET FUEL SETUP/BL COILS/DUAL OIL COOLERS/RB EXTERNAL PCV/PD TRANY W COOLER/M3 FRONT N REAR SUSPENSION W/ROUGE BEARINGS/HOTCHKIS ADJUSTABLE END LINKS/ADUSTABLE REAR TOE ARMS AND CAMBER LINKS/EIBACH SWAYBARS/BC RACING BR COILOVERS AND CAMBER PLATES/AKG REAR SUBFRAME, DIFF, REAR SHOCK BUSHINGS/POWER FLEX BUSHINGS/WAVETRAC REAR DIFF WITH DEFIV BRACE AND VAC COVER/4IN EXHAUST
Reply With Quote
(#43)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-26-2015, 06:33 PM

Quote:
Originally Posted by _ink
It would be interesting to know what version injectors had caused this if you have it handy.
They were index -09. The original injectors,
Reply With Quote
(#44)
Old
samstryker's Avatar
samstryker samstryker is offline
Junior Member
 
Posts: 452
Join Date: Aug 2014
Car: 2008 535xiT e61
Default 08-27-2015, 01:19 AM

Did you ever send your oil in for analysis prior to this? I remember a while back another member threw a rod because of a leaking injector. Blackstone found high amounts of fuel in his oil


2008 e61 535xit: VTT GCs, Fuel-it PI, fuelab FPR w/ return line, stage 2 lpfp, fuelab "700" inline pump, RB external PCV, VRSF 7.5" race FMIC, Inlets, outlet, AR ***, 3" chargepiping, 3" exhaust, JB4, BMS PI controller
Reply With Quote
(#45)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-27-2015, 10:10 AM

Quote:
Originally Posted by samstryker
Did you ever send your oil in for analysis prior to this? I remember a while back another member threw a rod because of a leaking injector. Blackstone found high amounts of fuel in his oil
I didn't.
Reply With Quote
(#46)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-27-2015, 10:13 AM

Quote:
Originally Posted by Optigrab
I'm surprised there's not a hole in your block. The other hydrolocked threads have seen blew a hole in the block
Me too. I was very surprised it didn't bust, if hydro lock was in fact the root cause. If it was hydro lock, it was only enough to slightly bend the rod and it just got worse over time even after I replaced all the injectors. No way to completely tell.
Reply With Quote
(#47)
Old
Optigrab Optigrab is offline
Junior Member
 
Posts: 61
Join Date: Jul 2015
Car: 08 135i 6AT
Default 08-27-2015, 11:27 AM

Quote:
Originally Posted by AUbeast86
Me too. I was very surprised it didn't bust, if hydro lock was in fact the root cause. If it was hydro lock, it was only enough to slightly bend the rod and it just got worse over time even after I replaced all the injectors. No way to completely tell.

Can I ask how much boost you were running and if you were using meth?
Reply With Quote
(#48)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-27-2015, 11:36 AM

Quote:
Originally Posted by Optigrab
Can I ask how much boost you were running and if you were using meth?
20psi with a port meth injection system I designed incorporating the Aquamist HFS-4 system (7 total nozzles). I know I had a bad injector because it would show up in logs and codes. I just can't confirm it was the root cause but I'm 90% sure it was due to the fact it was only in cylinder one. The logs returned to normal and the codes went away after I replaced the injector but the damage had already been done.
Reply With Quote
(#49)
Old
Optigrab Optigrab is offline
Junior Member
 
Posts: 61
Join Date: Jul 2015
Car: 08 135i 6AT
Default 08-27-2015, 11:46 AM

Quote:
Originally Posted by AUbeast86
20psi with a port meth injection system I designed incorporating the Aquamist HFS-4 system (7 total nozzles). I know I had a bad injector because it would show up in logs and codes. I just can't confirm it was the root cause but I'm 90% sure it was due to the fact it was only in cylinder one. The logs returned to normal and the codes went away after I replaced the injector but the damage had already been done.

Interesting... What was the abnormal stuff that showed in the logs for cylinder 1?
Reply With Quote
(#50)
Old
AUbeast86's Avatar
AUbeast86 AUbeast86 is offline
Senior Member
 
Posts: 764
Join Date: Nov 2012
Car: 2007 335i e92 Coupe
Default 08-27-2015, 11:56 AM

Quote:
Originally Posted by Optigrab
Interesting... What was the abnormal stuff that showed in the logs for cylinder 1?
Extremely lean in the logs with misfires and rail shut off codes.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump




vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2020, N54tech.com