Hi guys/gals new to forum and desperate for help! I own a 13 plate twin air punto and she’s totally down on power,sounds like it’s running on 1 cylinder,Iv changed plugs and coils,still the same and will hardly rev up! It sounds awfull!! Is there any fiat mechanics on here?? I’m fearing the worse and it’s gona cost me a fortune! My friends checked compression to start from basics and that seems ok,any suggestions would be really appreciated ?