Smoke issue Injectors

Mixmaster · 10-25-2017, 01:49 PM

Currently working on finding cause for my smoke issue. Its when cold under decel and light load, disappears when warm. Lots of post re similar suggesting valve stems and covers. OEM Turbos have 40k on them.

Mechanic suggests its injectors and it does smell a bit rich. But the smoke is blue/grey. Surely the smoke should be black if its leaky injectors?

Jeff@TopGearSolutions · 10-25-2017, 03:02 PM

Did you pull the spark plugs yet? If not, they may be able to tell you something, IE fouled in oil or fuel.

Mixmaster · 10-25-2017, 03:06 PM

Yeah they seem ok not wet. But a couple of cylinders seem cleaner

tofu? · 10-25-2017, 03:34 PM

Leaky injectors resulted in plumes of white smoke with a distinct fuel smell for me

langsbr · 10-25-2017, 08:27 PM

I vote injectors.

10-25-2017, 01:49 PM	#1
Mixmaster Private First Class 28 Rep 99 Posts Drives: 335i E90 N54 / 2014 i3 REX Join Date: Nov 2013 Location: Auckland iTrader: (0)	Smoke issue Injectors Currently working on finding cause for my smoke issue. Its when cold under decel and light load, disappears when warm. Lots of post re similar suggesting valve stems and covers. OEM Turbos have 40k on them. Mechanic suggests its injectors and it does smell a bit rich. But the smoke is blue/grey. Surely the smoke should be black if its leaky injectors? __________________ N54 E91 Msport Wagon, VRSF 7"FMIC, VRSF DPs, BMS OCC, BMS DCI, RB PC Valve, Wavetrac LSD, MHD Wedge , ER Charge Pipe, Nuke Performance Bov, MMP Inlets, Fuel-It Stage 2 Bucketless
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10-25-2017, 03:02 PM	#2
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Did you pull the spark plugs yet? If not, they may be able to tell you something, IE fouled in oil or fuel.
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10-25-2017, 03:06 PM	#3
Mixmaster Private First Class 28 Rep 99 Posts Drives: 335i E90 N54 / 2014 i3 REX Join Date: Nov 2013 Location: Auckland iTrader: (0)	Yeah they seem ok not wet. But a couple of cylinders seem cleaner __________________ N54 E91 Msport Wagon, VRSF 7"FMIC, VRSF DPs, BMS OCC, BMS DCI, RB PC Valve, Wavetrac LSD, MHD Wedge , ER Charge Pipe, Nuke Performance Bov, MMP Inlets, Fuel-It Stage 2 Bucketless
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10-25-2017, 03:34 PM	#4
tofu? Second Lieutenant 88 Rep 242 Posts Drives: e92 n54 Join Date: Dec 2013 Location: NYC 11385 iTrader: (0)	Leaky injectors resulted in plumes of white smoke with a distinct fuel smell for me
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10-25-2017, 08:27 PM	#5
langsbr First Lieutenant 234 Rep 317 Posts Drives: 335i Join Date: Aug 2013 Location: SC iTrader: (0)	I vote injectors.
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