Fuel up then no start...HELP

[CaptMike]

is it an omc by chance? I had a very similar problem with a 94 225 ocean runner. She would fire right up at the mooring but would refuse to start when hot. The mechanics never really were able to diagnose the problem until the number 3 cylinder seized.

[fishsmith]

Here are 3 common parts replaced on outboards with starting problems, I suggest a search on google for each to see if one fits your bill, best of luck -

Power pack
Stator
Voltage regulator

[Christian]

have you changed your spark plugs lately? cleaned em off? tightened them?
might be a loose plug wire, or a just a bad wire. i think.

[Monty]

Hi Johnnyc,

I have a friend with a small boat with a six year old 70 horse Johnson, it has a similar problem like yours. When the motor is being run onshore it will run fine, but in the water under load it won't restart, or it will bog down.

He's had the power pack and stator replaced, they've checked fuel and wiring, and two different shops have been unsuccessful.

He's had nothing but problems with this motor from the beginning, and is currently having a 75 horse Honda installed. He's giving up on the 2 strokes, problems could possibly be from the new fuel with ethanol.

[Gary]

Kind of uncommon in marine applications, but vapor lock.

[denis]

Is it a fiberglass tank.fiberglass and ethanol do not go good together,know of two boats with that problem.What Van said.

They had to change their tanks,big bucks.