compression and leakage test

[colin smith]

Hi

Could anybody tell me if the figures below are good or bad for a 1990 964 with 136K on the clock???


Cylinder 1 195 psi and 5% leak off
Cylinder 2 190 psi and 5% leak off
Cylinder 3 190 psi and 7% leak off
Cylinder 4 198 psi and 8% leak off
Cylinder 5 195 psi and 5% leak off
Cylinder 6 195 psi and 8% leak off

thanks

 

[bernard tester]

Hi Colin that looks good to me I checked one that was smoking last week all were low on compression about 120 leakage between 5 & 10 % I suspect oil ring broken and the rest worn

 

[andrew_churcher]

i had my 964 leak tested and results were similar and it pulls like a train though does leak a little oil itself.

 

[kevin]

looks positive to me, figures from my years of Rennlist suggest it is looking good, and if measurements of 10% per cylinder are ok, then good to go.

K