Technical compression

[river]

Please Can anyone tell me what the compression should be on my fiat marea 1.8 elx petrol, and how you check is it each spark plug hole, many thanks :chin:

 

[custard]

dont know what the compression should be but if you get a gunsons pressure testor from halfolds(£19.99)you can use that.
just screws into the spark plug hole while you turn the engine(coils unplugged)
even if you dont know what it should be you can usually see if ones lower than the other 3

 

[river]

cheers Im going to get one tomorrow

 

[RS Pilot]

It's 10.3 : 1