'91 mariner 60 hp

[lost in ia]

pulled in to the dock sitting there idling motor backfired and died couldn't restart choked it pumped primer nothing. Got home tried it again it started. Went to Lake next day fired up ran across lake fished went to start motor again just cranked wouldn't start, tried everything. got back home same story fired up and ran. Help??? any suggestions??

 

[roscoe]

Welcome to iboats.

How long have you had this motor?
Has it backfired before?
Backfire through the exhaust (boom) ?
Or backfire through the carb? ( whiff or sneeze like )

Backfire could have broken the diaphragm in the fuel pump, which would cause fuel to leak into the crankcase, and flood out a cylinder.

Or, the backfire could have broke the woodruff key that holds the flywheel to the crankshaft, which would through the timing off.

So, rebuild the fuel pump, as they tend to deteriorate with time.

If that doesn't fix the issue, check timing and go from there.

Also, clean and adjust carbs so it doesn't backfire and cause the same problem in the future.