I have a 2011 mercury 115 HP four stroke serial number 1B843908
Started with having problems with bogging down at speed. It would troll all day long but sometimes and only sometimes at increased speed it just does not want to go.
Where I have gone so far........
1) Had the old foam style air filter, replaced with newer mesh style
2) Since it was fine at slow speed’s I was thinking it was not getting enough gas and changed both fuel filters
3) Change all spark plugs
4) Drained fuel pump separator to check for sludge...nothing
5) Check fuel lines for collapsing, look good.
6) Its an EFI so I put a new battery in.
Ive run it in between each step to test. Yesterday was the newest test with the battery. Started right up, idled perfect at the dock while I parked the truck. Backed up and sounded great, hit the gas and instantly knew it wasnt right. Backed off and she shut down, wouldnt restart. Back to dock with the trolling motor. Took it home and put muffs on. I can get her started again but doesnt stay running. Seems Im headed backwards, not closer to a solution.
Any ideas?
Thanks,
Dave