Stuttering

gdub · 01-12-2013, 12:06 AM

i was having a ton of misfires mainly under WOT and carbon cleaning fixed it.

it seems the #1 cause for misfires is carbon build up in this motor. find a local place that does walnut blasting.

KingOfJericho · 01-12-2013, 11:35 AM

They cleaned mine under warranty but my car only had about 18k on the clock. It was actually the main factor in me turning the car in at lease-end.

Trptguy · 01-12-2013, 11:36 AM

i have not found a indy shop in MA that does the walnut blasting

mike the snake · 01-12-2013, 12:42 PM

my car with 44K miles started stuttering at WOT, then threw misfire codes (Procede tune with DCI) and after new plugs and swapping coils around, the same holes misfired and the dealer finally performed the walnut shell valve cleaning and problem solved.

I've since installed the Burger oil catch can which helps a bit with this issue.

Trptguy · 01-12-2013, 07:56 PM

what should one expect to pay for walnut media blasting?

Stan.mac · 01-12-2013, 09:51 PM

Ahhh gotcha...

n54door · 01-14-2013, 03:32 PM

Quote:

Originally Posted by Trptguy

what should one expect to pay for walnut media blasting?

400-1300 including new gaskets and labor. The price depends on if it's a 'guy in a garage', and indy shop, or dealer.

gdub · 01-14-2013, 07:03 PM

i took it to some local dudes in dallas, ultimate bimmer service, they charged 500 and changed some oil gaskets at the same time, since the manifold was off. the gaskets were another 100 or so

Brian@MWP · 01-15-2013, 11:14 PM

I will agree 100% with KingOfJericho . It sound like you have carbon build up on your valves. The intake on these cars are actually easy to remove . At the dealer they use a high pressure carbon cleaning kit that cleans the valves using ground up walnut shells. I have seen a set before and after and let me tell you they look brand new when there done!

01-12-2013, 12:06 AM	#23
gdub Private First Class 18 Rep 144 Posts Drives: none Join Date: Apr 2011 Location: dfw iTrader: (0)	i was having a ton of misfires mainly under WOT and carbon cleaning fixed it. it seems the #1 cause for misfires is carbon build up in this motor. find a local place that does walnut blasting.
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01-12-2013, 11:35 AM	#24
KingOfJericho Major General 2452 Rep 7,341 Posts Drives: Yes Join Date: Aug 2007 Location: CT iTrader: (1) Garage List 2010 135i Coupe [5.26]	They cleaned mine under warranty but my car only had about 18k on the clock. It was actually the main factor in me turning the car in at lease-end. __________________ The views and opinions expressed in this post are those of the author and do not necessarily reflect the official policy or position of Bimmerpost. 2018 Jeep Grand Cherokee High Altitude Hemi \| 2010 S4 Sold \| 2010 BMW 135i Retired \| 2006 Lotus Exige Sold
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01-12-2013, 11:36 AM	#25
Trptguy Lieutenant 26 Rep 493 Posts Drives: '87 BMW 325ic, '08 BMW 135i Join Date: Jul 2011 Location: Littleton, MA iTrader: (0)	i have not found a indy shop in MA that does the walnut blasting
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01-12-2013, 12:42 PM	#26
mike the snake Captain 68 Rep 643 Posts Drives: 135i Join Date: Sep 2011 Location: Sonoma County, CA. iTrader: (1)	my car with 44K miles started stuttering at WOT, then threw misfire codes (Procede tune with DCI) and after new plugs and swapping coils around, the same holes misfired and the dealer finally performed the walnut shell valve cleaning and problem solved. I've since installed the Burger oil catch can which helps a bit with this issue.
	Appreciate 0 Quote

01-12-2013, 07:56 PM	#27
Trptguy Lieutenant 26 Rep 493 Posts Drives: '87 BMW 325ic, '08 BMW 135i Join Date: Jul 2011 Location: Littleton, MA iTrader: (0)	what should one expect to pay for walnut media blasting?
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01-12-2013, 09:51 PM	#28
Stan.mac Second Lieutenant 9 Rep 296 Posts Drives: 135i M-Sport Join Date: Aug 2012 Location: NoVA iTrader: (3)	Ahhh gotcha... __________________ "I live my life a quarter mile at a time. Nothing else matters: not the mortgage, not the store, not my team and all their bullshit. For those ten seconds or less, I'm free." afe DCI/Greddy Oil Catch Can/Catless DP/ Cobb Stage 2+/Berk Axle-Back(Race)/AAW CP w BOV/H&R Springs/ ALPINA Flash/Helix FMIC/
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01-14-2013, 07:03 PM	#30
gdub Private First Class 18 Rep 144 Posts Drives: none Join Date: Apr 2011 Location: dfw iTrader: (0)	i took it to some local dudes in dallas, ultimate bimmer service, they charged 500 and changed some oil gaskets at the same time, since the manifold was off. the gaskets were another 100 or so
	Appreciate 0 Quote

01-15-2013, 11:14 PM	#31
Brian@MWP Private 6 Rep 90 Posts Drives: BMW Join Date: Jan 2013 Location: Chicago iTrader: (0)	I will agree 100% with KingOfJericho . It sound like you have carbon build up on your valves. The intake on these cars are actually easy to remove . At the dealer they use a high pressure carbon cleaning kit that cleans the valves using ground up walnut shells. I have seen a set before and after and let me tell you they look brand new when there done!
	Appreciate 0 Quote