fivestarHERMES
New member
Alright so im gonna do a Compression test on my mercury elpto 90hp 2 stroke 2001 model i just emptied the tank on boat to replace fule that has been standing for 1 year just wanna make sure its clean, so my question is can i do a compression test without fule in boat engine? i dont know if this will damage the cylinders with no fule or if dont matter please help