Removing intake on 328xi for cleaning

sibhusky · 10-17-2012, 12:56 PM

Im planning to do the plugs and was thinking i shouldnt have much ahead to remove the intake such that i can clean the valve/port area.

Are there any gotchas? Just wondering if its as simply undoing the manifold bolts after removing the cover and airbox and a few electrical connectors.

Thanks

N0OS3 · 10-17-2012, 03:06 PM

yeah, that's pretty much it... are u replacing plugs with OEM ones or something "performance" you're experimenting with?
After 58k miles i expected my throttle body port and valve to be filthy but was to my surprise it had very little debris... use rubbing alcohol and a soft towel and you should be in the game

mike-y · 10-17-2012, 05:15 PM

cleaning isn't really needed on the N52 because it still uses port injection, and the intake ports/valves are bathed in gasoline, keeping them clean. When I did the manifold swap on my car with about 75,000 miles, the intake ports and valves were spotless.

but, if you really want to do it, feel free. it's kinda a PITA tho. removing the cover and airbox is only the tip of the iceberg for a manifold R&R.

10-17-2012, 12:56 PM	#1
sibhusky Private 3 Rep 64 Posts Drives: 2011 E90 M3 Join Date: Jul 2012 Location: NoVa iTrader: (0)	Removing intake on 328xi for cleaning Im planning to do the plugs and was thinking i shouldnt have much ahead to remove the intake such that i can clean the valve/port area. Are there any gotchas? Just wondering if its as simply undoing the manifold bolts after removing the cover and airbox and a few electrical connectors. Thanks
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10-17-2012, 03:06 PM	#2
N0OS3 Colonel 150 Rep 2,217 Posts Drives: E90 Join Date: Feb 2010 Location: Oak Harbor, WA iTrader: (5)	yeah, that's pretty much it... are u replacing plugs with OEM ones or something "performance" you're experimenting with? After 58k miles i expected my throttle body port and valve to be filthy but was to my surprise it had very little debris... use rubbing alcohol and a soft towel and you should be in the game
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10-17-2012, 05:15 PM	#3
mike-y just another bmw douche bag 196 Rep 3,640 Posts Drives: 1.9L of fury Join Date: Nov 2008 Location: Los Angeles, CA iTrader: (4)	cleaning isn't really needed on the N52 because it still uses port injection, and the intake ports/valves are bathed in gasoline, keeping them clean. When I did the manifold swap on my car with about 75,000 miles, the intake ports and valves were spotless. but, if you really want to do it, feel free. it's kinda a PITA tho. removing the cover and airbox is only the tip of the iceberg for a manifold R&R.
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