Technical compression issues

[Alex81]

Hi,I am having problems with the engine on fiat 124 sport coupe abarth.i have new valves,new cylinder segments,new valves but on 1 and 2 cylinders i have low compresion

 

[Davren]

Low compression on 2 adjacent cylinders is often caused by a leaking head gasket.
.

 

[varesecrazy]

Hi

If this is a modern 'mazda' build.. then the motors 'multiair' system can cause these issues..

What maintenance regime has the vehicle had?