Took my boat out for 2nd time this spring after getting new impeller and lower unit lube changed and right before I left when I started the boat in neutral the RPMs starting racing up until I shifted it into gear. Turned motor off before I put it on the trailer and same issue, when in forward or reverse no issues, but while in neutral it sounds like it’s full throttle. It’s a 2002 90HP with no hot foot, just standard throttle. I took the cover off after I got out of the water and was shifting back and forth and everything to me looked fine, with good grease everywhere.

Any tips on how to resolve this issue? Plan on going out in the morning and can report back with any updates.