Engine Malfunction

polarbmw · 11-14-2021, 08:58 AM

Friday driving home from work and sudden engine malfunction reduced power message came up on iDrive of 2013 xdrive28i. Engine shaking and could smell gasoline. Limped home and parked. Disconnected battery. Smelled like gas from exhaust. P0304 code misfire cylinder 4. On Saturday, took out spark plug, gasoline on plug, replaced plug and coil. Started car and same issues as above but a lot of white smoke coming from exhaust so I turned off ignition and disconnected battery again. Can you please help me on what else could be the problem?

aloyouis · 11-21-2021, 12:42 PM

White smoke?

Head gasket? Check your coolant level.

05X3lover · 11-21-2021, 05:47 PM

Head gasket fail does seem likely if there's a lot of white smoke. I wouldn't run the motor until you figure out if that's the issue or not.

Gamb1t · 11-22-2021, 01:55 PM

You should check the other plugs and coils too. Are there any oil residue in the coolant reservoir?

11-14-2021, 08:58 AM	#1
polarbmw New Member 0 Rep 14 Posts Drives: e84 x1 Join Date: Oct 2021 Location: San Diego iTrader: (0)	Engine Malfunction - Reduced Power Friday driving home from work and sudden engine malfunction reduced power message came up on iDrive of 2013 xdrive28i. Engine shaking and could smell gasoline. Limped home and parked. Disconnected battery. Smelled like gas from exhaust. P0304 code misfire cylinder 4. On Saturday, took out spark plug, gasoline on plug, replaced plug and coil. Started car and same issues as above but a lot of white smoke coming from exhaust so I turned off ignition and disconnected battery again. Can you please help me on what else could be the problem?
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11-21-2021, 12:42 PM	#2
aloyouis Private First Class 19 Rep 119 Posts Drives: 2013 X1 x28 MSport Join Date: Jun 2005 Location: Michigan iTrader: (0)	White smoke? Head gasket? Check your coolant level.
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11-21-2021, 05:47 PM	#3
05X3lover Private 17 Rep 92 Posts Drives: '15 Dark Gray X1 AWD Join Date: Mar 2010 Location: Greensboro NC area iTrader: (0)	Head gasket fail does seem likely if there's a lot of white smoke. I wouldn't run the motor until you figure out if that's the issue or not.
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11-22-2021, 01:55 PM	#4
Gamb1t Major 598 Rep 1,343 Posts Drives: 330i,X1,Z4,Solstice GXP, RX-8 Join Date: Aug 2015 Location: Canukistan iTrader: (0)	You should check the other plugs and coils too. Are there any oil residue in the coolant reservoir?
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