B58 acting weird

vinzcast21 · 09-11-2019, 11:16 PM

Anyone can guess what's happening to my engine? this is while the car is idling no gas is inputted. no mods, bone stock

going to the dealer soon to check, but any guess for the problem will be appreciated!

.

bacon_45 · 09-12-2019, 01:55 AM

Im tuned stage 2 e30 fbo, and I get this too. I'm pretty sure its normal.

vinzcast21 · 09-12-2019, 02:58 AM

Quote:

Originally Posted by bacon_45

Im tuned stage 2 e30 fbo, and I get this too. I'm pretty sure its normal.

yeah but im not tuned

msk340i · 09-12-2019, 05:56 AM

My e46 M3 used to do the same when it has a vacuum leak. I'm not a mechanic so I may be talking bull!

Wires · 09-14-2019, 10:41 AM

Does it do it all the time, just after cold start, etc. I have always gotten a slight hiccup like that when driving away on a cold engine.

vinzcast21 · 09-14-2019, 11:03 AM

Quote:

Originally Posted by Wires

Does it do it all the time, just after cold start, etc. I have always gotten a slight hiccup like that when driving away on a cold engine.

mostly after filling up not cold start

eluded · 09-15-2019, 02:55 AM

My idle never moves. It's stock

kern417 · 09-15-2019, 06:44 AM

my guess is vacuum leak or something with the ignition causing the car to stumble. wouldn't hurt to scan for codes and see if anything comes up.

vinzcast21 · 09-20-2019, 03:49 PM

Quote:

Originally Posted by kern417

my guess is vacuum leak or something with the ignition causing the car to stumble. wouldn't hurt to scan for codes and see if anything comes up.

injector was loose. fixed

F30moni · 09-23-2019, 08:58 PM

Quote:

Originally Posted by vinzcast21

Quote:

Originally Posted by kern417

my guess is vacuum leak or something with the ignition causing the car to stumble. wouldn't hurt to scan for codes and see if anything comes up.

injector was loose. fixed

My car does it too now. Didnt do it stock but from the very day i went stage 2 93 mhd tune it started. No idea if its normal or not.

aadum · 09-25-2019, 04:32 AM

Quote:

Originally Posted by F30moni

My car does it too now. Didnt do it stock but from the very day i went stage 2 93 mhd tune it started. No idea if its normal or not.

I have MHD stage 1 93 map same issue but only after car being warm and if i drive it bit faster?
Did you try to contact MHD?

BDP_FL · 09-25-2019, 11:01 PM

Quote:

Originally Posted by vinzcast21

injector was loose. fixed

I'm having the same issue. It started after I installed a catless downpipe and started running BM3 stage 2 93 octane (AGG).

Would you be able to describe in greater detail what you had to tighten, how you got to it, etc.? I know where the fuel rail is and I have diagrams of system itself, but I'm in no way familiar with either... Help would be greatly appreciated.

Attachments:
1. B58 Breakdown Video (https://www.enginelabs.com/news/tear...linder-engine/ // see 03:57 - 04:55)
2. HPFP-to-Fuel Rail Diagram
3. Fuel Rail & Fuel Injectors Diagram

F30moni · 10-14-2019, 06:00 AM

Quote:

Originally Posted by aadum

Quote:

Originally Posted by F30moni

My car does it too now. Didnt do it stock but from the very day i went stage 2 93 mhd tune it started. No idea if its normal or not.

I have MHD stage 1 93 map same issue but only after car being warm and if i drive it bit faster?
Did you try to contact MHD?

I havent done so, ill log the car tmm and send it in since they'll probably request a log

vinzcast21 · 10-19-2019, 02:27 PM

update: the problem lies on the evap cannister

Jason764h · 10-19-2019, 07:28 PM

Quote:

Originally Posted by vinzcast21

update: the problem lies on the evap cannister

So you ended figuring out it was the injector

09-11-2019, 11:16 PM	#1
vinzcast21 Lieutenant 161 Rep 446 Posts Drives: F30 340i MY2017 Join Date: Jul 2018 Location: canada iTrader: (0)	B58 acting weird Anyone can guess what's happening to my engine? this is while the car is idling no gas is inputted. no mods, bone stock going to the dealer soon to check, but any guess for the problem will be appreciated! . __________________ ================================= Mod bug will bite you if you buy a BMW =================================
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09-12-2019, 01:55 AM	#2
bacon_45 Private 42 Rep 94 Posts Drives: 2018 340i BM3 FBO Join Date: Feb 2017 Location: San Diego, CA iTrader: (0)	Im tuned stage 2 e30 fbo, and I get this too. I'm pretty sure its normal.
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09-12-2019, 05:56 AM	#4
msk340i Major 1320 Rep 1,134 Posts Drives: 340i M sport Join Date: Jan 2019 Location: Orlando, FL iTrader: (1)	My e46 M3 used to do the same when it has a vacuum leak. I'm not a mechanic so I may be talking bull!
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09-14-2019, 10:41 AM	#5
Wires Brigadier General 1646 Rep 4,876 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	Does it do it all the time, just after cold start, etc. I have always gotten a slight hiccup like that when driving away on a cold engine.
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09-15-2019, 02:55 AM	#7
eluded 2JZ-GTE 3029 Rep 3,991 Posts Drives: 340 6MT, 50e, others Join Date: Nov 2015 Location: Sofia iTrader: (0)	My idle never moves. It's stock __________________ A man who views the world the same at 50 as he did at 20 has wasted 30 years of his life.
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10-19-2019, 02:27 PM	#14
vinzcast21 Lieutenant 161 Rep 446 Posts Drives: F30 340i MY2017 Join Date: Jul 2018 Location: canada iTrader: (0)	update: the problem lies on the evap cannister __________________ ================================= Mod bug will bite you if you buy a BMW =================================
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