I have a 2002 merc 225hp efi that will not get up on plane. I changed the plugs and took it for a test run. It worked good then on the third attempt it would not get on plane after that. Compression is good. I checked the coils with a timing light and they were good.. I take it to a mechanic but it works good on the muffs. Any suggestions?
ACAMACIAN
ACAMACIAN