BMW 3-Series (E90 E92) Forum - View Single Post

Beemw335 · 01-21-2013, 11:29 PM

The n54 is direct injection, so seafoam wont do anything to the intake valves. Eventually a manual scrubbing/walnut blasting is needed for carbon buildup in the intake valves.

01-21-2013, 11:29 PM	#844
Beemw335 Colonel 62 Rep 2,013 Posts Drives: 335i Join Date: Mar 2011 Location: My car is my home iTrader: (2)	The n54 is direct injection, so seafoam wont do anything to the intake valves. Eventually a manual scrubbing/walnut blasting is needed for carbon buildup in the intake valves.
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