Piaggio engine compression?

Hi,

Does anybody know what the factory spec cylinder compression (PSI) for the following engine should be?

1998 Piaggio Liberty 125cc 4 stroke pre-leader engine

Thanks,

Mark

 

Try and google mate or haynes manual

 

Thanks for the reply.

You might be surprised to learn I have tried google and found nothing - well, I'm here in an attempt to avoid spending £20 on a haynes manual just to find out what my engine compression should be

 

got a piaggio my self so I got a Haynes manual here. it says liberty 125 four stroke engine compression ratio 10.6 to 1

 

Cool, thanks!

So 10.6 x 14.7 = 155.82.

My engine is showing 155-160 on the compression tester after 5 seconds of cranking - so my engine compression is ok If my calculation is correct....

I also did the timed time test;

6:30 - I got 167 PSI
7:30 - The tester was showing 160 PSI

So it dropped by 7 PSI over an hour - is that good/bad?

 

yh yours must be ok mate