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Mercury 150hp EFI OUTBOARD shuts down

Engine, transmission, I/O, OB and generator repair and maintenance discussion forum.

Topic author
Posts: 1
Joined: Sun May 19, 2019 7:53 pm
Vessel Info: 1999 wellcraft coastal 270

Mercury 150hp EFI OUTBOARD shuts down

Postby Dinodawg » Wed Jun 12, 2019 7:13 am

Hello all, I have twin mercury (1999) 150 EFI saltwater series outboard, both starts and runs, however, one engine keeps shutting down, it re-starts easily runs for about 3 to 5 minutes, runs high then shuts down again, I've changed fuel filter & water separator to rule out bad gas, and still it keeps shutting down, any HELP?

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