Mercury 15 hp 4 stroke 2006 - Runs great dies after an hour
by Scott K
(Vancouver Island, BC, Canada)
Hello, Thanks for any help you can offer.
My motor starts in 1 or 2 pulls no problem.
Runs perfect for over an hour at all speeds and rpm.
After an hour or so it starts to intermittently bog, dropping rpm by what seems 50 - 60 % then returns to normal rpm getting worse over the next several minutes.
(I tried opening choke and that seemed to make it stall faster,, I also tried squeezing the primer bulb, but it was already hard so made no difference)
It then eventually bogs and dies completely.
It will restart and run for 5 or 10 minutes then stall.
After a few minutes of that, it will stall and will not restart.
Leave it a few hours and it starts well and runs well.
I would appreciate your expert advice or anything you can suggest to fix or diagnose this.