Coolant in spark plug hole?????

335ier · 03-12-2015, 02:46 PM

Had a mega full service today, the mechanic was very thorough he mentioned there were signs of possible coolant in no 3 plug hole spotted when replacing plugs, is there a known weak point, or am I looking at possible head gasket replacement.... whats the approximate cost of that?

Many thanks.

N52 engine 2006 330i

wallsmk2 · 03-12-2015, 04:12 PM

Any oil in the expansion tank? Definitely coolant? Perhaps get the garage to check the head bolts. They are known to fail. http://www.bimmerfest.com/forums/sho...d.php?t=711444

If it is coolant and it is the head bolt issue, then BMW should cover it although there could be some resistance as is normal. But they do know about this problem.

335ier · 03-13-2015, 02:08 AM

Thanks, I'll check tonight.

03-12-2015, 02:46 PM	#1
335ier Lieutenant 37 Rep 408 Posts Drives: F31 335d Join Date: Nov 2008 Location: england iTrader: (1)	Coolant in spark plug hole????? Had a mega full service today, the mechanic was very thorough he mentioned there were signs of possible coolant in no 3 plug hole spotted when replacing plugs, is there a known weak point, or am I looking at possible head gasket replacement.... whats the approximate cost of that? Many thanks. N52 engine 2006 330i
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03-12-2015, 04:12 PM	#2
wallsmk2 Lieutenant 28 Rep 405 Posts Drives: e91 325i Join Date: Nov 2011 Location: exeter iTrader: (0)	Any oil in the expansion tank? Definitely coolant? Perhaps get the garage to check the head bolts. They are known to fail. http://www.bimmerfest.com/forums/sho...d.php?t=711444 If it is coolant and it is the head bolt issue, then BMW should cover it although there could be some resistance as is normal. But they do know about this problem.
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03-13-2015, 02:08 AM	#3
335ier Lieutenant 37 Rep 408 Posts Drives: F31 335d Join Date: Nov 2008 Location: england iTrader: (1)	Thanks, I'll check tonight.
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