We have an 06 F90 EFI (950hrs) that has developed a loss of power and a miss. It sometimes will stall at idle and when going from Forward to Reverse. I was told that the stall has started a week ago and the loss of power yesterday.
Today I changed the filter on the engine and pulled the plug wires one by one with it running.
Cyl 1 - rough and stalled
Cyl 2 - rough and stalled
Cyl 3 - rough and stalled
Cyl 4 - little rougher than it was running but kept running
When I go to work tomorrow will test the compression on it. But are there any other things I can check/ test? We need this boat and I prefer not to bring it to the dealer (down time). Unless my diagnosis are off i have narrowed it down to the 4th cyl.
Injector?
Today I changed the filter on the engine and pulled the plug wires one by one with it running.
Cyl 1 - rough and stalled
Cyl 2 - rough and stalled
Cyl 3 - rough and stalled
Cyl 4 - little rougher than it was running but kept running
When I go to work tomorrow will test the compression on it. But are there any other things I can check/ test? We need this boat and I prefer not to bring it to the dealer (down time). Unless my diagnosis are off i have narrowed it down to the 4th cyl.
Injector?