Merc. 225 EFI

[eggsuckindog]

Check the on motor fuel filter for water - that could be the alarm maybe but your description almost sounds like a voltage issue. The motor thinks its been turned off and on, hence the alarm - does it sound like the original test sequence when you turn the key?

On another note - when mine starts that low 1-2K stumble I run some Evinrude Fuel System Cleaner on deposit removel ratio, clears it up in 1/2 hr running