Could leaked oil from VCG get into combustion chamber through spark plug well?

lvb125 · 09-11-2014, 03:50 AM

If my valve cover gasket is leaking and oil is getting into the spark plug well, is it possible that oil will get into the combustion chamber? does spark plug thread seals the combustion chamber if torqued properly?

In that case, what is the way to replace spark plugs and clean up this oil without getting anything into the combustion chamber?

Thanks

Efthreeoh · 09-11-2014, 04:42 AM

It's impossible for oil to enter the combustion chamber through the spark plug hole if the plug is present and properly torqued. You'll have to suck out the oil from the hole first. Getting a small amount in the chamber will not be an issue anyway.

09-11-2014, 03:50 AM	#1
lvb125 Private First Class 26 Rep 109 Posts Drives: 330i Join Date: Apr 2014 Location: Canada iTrader: (0)	Could leaked oil from VCG get into combustion chamber through spark plug well? If my valve cover gasket is leaking and oil is getting into the spark plug well, is it possible that oil will get into the combustion chamber? does spark plug thread seals the combustion chamber if torqued properly? In that case, what is the way to replace spark plugs and clean up this oil without getting anything into the combustion chamber? Thanks Last edited by lvb125; 09-11-2014 at 04:06 AM..
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09-11-2014, 04:42 AM	#2
Efthreeoh General 17438 Rep 18,808 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	It's impossible for oil to enter the combustion chamber through the spark plug hole if the plug is present and properly torqued. You'll have to suck out the oil from the hole first. Getting a small amount in the chamber will not be an issue anyway.
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