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BMW 3-Series (E90 E92) Forum
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Need Help! Downpipe-midpipe studs broke; misfires; hiccups/stutting...Suggestions?
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01-03-2013, 10:50 PM | #2 |
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It probably just needs new plugs/coils. Most misfires are due to this. If it's persistent cylinder 5 I'd replace all the plugs first (likely can get this done as part of your 30k service), if you keep getting a cylinder 5 misfire, get the code stored and then de-mod it and take it in and let them replace the coil.
On the other hand, the coils are only 40 bucks. |
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01-05-2013, 12:22 PM | #3 |
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I did the same thing to my down pipes. Realized those studs are welded to the down pipes and can't be removed. Landed up cutting them flush and drilling them out. Put in some nice ss bolts with anti seize.
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01-05-2013, 01:07 PM | #4 | |
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01-05-2013, 01:21 PM | #5 | ||
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how did you guys manage to break those bolts? or they broke by themselves when taking the nuts out? op: i would look into buying used stock dp or take advantage and buy aftermarket dp good luck |
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01-08-2013, 10:14 AM | #6 | |
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But... What is every ones thought about leaving the dp bolts unfixed before my 30k service? I currently have no tools or lift currently.
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01-08-2013, 10:16 AM | #7 | |||
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08 Legacy Spec B (08-) 09 335i (2010-) 15 X5 xdrive 35i (2015-) 17 Forester XT (2016-) |
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01-08-2013, 10:52 PM | #8 |
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If you didn't get those out already, take a cutting wheel and cut the flange parallel to the stud to release the tension. Then take a screw driver and hammer and it should come out pretty easy. M8 bolts fit in perfectly. This is a pretty common occurrence.
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01-09-2013, 10:03 AM | #9 |
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Ive done that already, with heat applied as well. I dont want to hammer to hard bc of the turbo. Ive also tried an air gun. Im just going to have a shop drill it out.
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01-15-2013, 04:19 PM | #10 |
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Does anyone know the stud part #? Or a replacement? I want something comparable to oem so they wont give me any problems for using other than oem bolts and nuts.
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01-15-2013, 09:04 PM | #12 |
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Yes, the nut was seized. Landed up stripping the nut. I decided to grind the nut off and try to heat the stud up with a torch and punch it out. Then I realized it was welded - fml.
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Montego Blue E90 335i
7" VRSF IC | OFT Tune | DCI | RB PCV | Secondary CAT Delete & CYBA 3.75" Tips | M3 Front | Mtech Rear | CSL Trunk | 219M | KW V1 | AA CP |
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