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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Valve de-coking

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      02-03-2014, 01:55 AM   #1
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Drives: 2012 E92 M3 ZCP
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Valve de-coking

I've read about 40 ways of doing this, sans visiting the dealer (Im not spending $800 for them to use their fancy machine!), but has anyone had any luck with a less evasive method?

I have to do my oil filter standoff gasket soon and will have my intake manifold backed up (but not off), and would like to de-coke my valves before I run JB4 on them (installing a OCC, no more coke!). At 108000km mine don't seem to be coked enough to cause a rough idle, but I would like to blast them as clean as I can, just to be nice to 'er.
2012 Alpinweiss III E92 M3 ZCP - AA green filter - Unobtainium Welding Custom X Pipe With 100 Cell HFC's - Gintani Sport Axleback - MTEC LED AE's

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