How to do a Compression Test

[SolFrog]

Thanks for the detailed info on this

[sam101814]

I'm seeing other posts on here where certain compression testers are not giving an accurate reading. I have a 2014 fx svho. What would be a good compression test tool for this ski that would give an accurate reading? Thanks

[Jonesyfxr]

I use an old SUN guage. They are all not 100% but as long ad they are all within like 5% you're good.