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1991 964 leak down and compression test figures


Vehicle Information: Year: 1991; Body Type: Coupe; Total Mileage: 104k;

I just had a major service (valve adjustments etc).In doing the service they did a compression test and a leak down as a matter of course. They said it was OK.But what defines good versus OK versus bad?My results:-Compression 1=177, 2=185, 3=199, 4=185, 5=200, 6=200Leak-down 1=3%, 2=2%, 3=1%, 4=3%, 5=1%, 6=1%

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