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Forty45
moocher
My Astra VXR needs valve stem seals replacing.
Which is a time consuming and costly job.
But, I'm told that a man in Birmingham can do it quick and cheap as he has a special tool which means you don't need to take the head off.
YouTube shows it can be done by filling the cylinder with either compressed air or string to prevent it dropping. Maybe this is how he does it.
If this is a better method then why don't more places do it? I'd rather not have to drive to Birmingham.