Depending on how worn the cylinder is, a decoke will remove some of the piston sealing carbon. You might well wait 500 - 1000 miles to bed in again.
I have done a complete top end over-haul on my 1992 Rover 214sli after
> suffering a cracked head. I did everything including an acid dunk, decoke,
> recut valve seats, new stem oil seals and hand-lapped
> valves. I got it back together last night, started it and it starts no
> problem. However, consumption was high before and its still high. As bad as
> 22mpg sometimes. I drive really gently aswell! Whats easiest and cheapest to
> start checking/changing? I need this solved!
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