16-09-15, 04:08 PM
That's a drain hole/passage to the spark plug well, there is another the other side, should be kept clear so any water that gets there can drain away 
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core plugs
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core plugs - by midden - 15-09-15, 11:10 PM
Re: core plugs - by joebloggs - 15-09-15, 11:28 PM
Re: core plugs - by midden - 15-09-15, 11:54 PM
Re: core plugs - by joebloggs - 16-09-15, 12:10 AM
Re: core plugs - by midden - 16-09-15, 02:32 PM
Re: core plugs - by Ebme Geek - 16-09-15, 04:08 PM
Re: core plugs - by midden - 16-09-15, 04:37 PM
Re: core plugs - by joebloggs - 16-09-15, 10:42 PM
Re: core plugs - by midden - 16-09-15, 11:48 PM
Re: core plugs - by His Dudeness - 17-09-15, 02:36 PM
Re: core plugs - by midden - 18-09-15, 12:05 AM
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