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grin factor

Cylinder Head Core Plugs

3 posts in this topic

Just had the car in for service today and was told the cylinder head core plugs are leaking. The receptionist has no idea what that means, niether do I, so its booked back in. They need the car for the day.

Fortunately is not quite 3, so it will be done under warranty.

The car has only done 18k miles, so I'm a little surprised at the fault.

Anyone know what it is etc?

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core plugs are the stoppers the fill the coreholes in the block.

the coreholes serve no mechanical purpose but are required in the casting process at manufacture.

they get plugged after casting to stop water leaks.

the size of the job depends on which plug is leaking and how easy to access the plug is.

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