1985 50hp Mercury not firing

[Hammer53]

So here is my situation. We were out in our pontoon boat yesterday. The kids had to go in for a minute so we docked the boat and stopped the motor for a few minutes. I started it back up to head out and it ran for 30-45 seconds and died and hasn't started again. The starter engages but it just won't fire.

So far I have changed the spark plugs. I put on a spark plug tester and it lit up on all cyclinders. The spark plugs are also getting wet. However maybe there isn't enough spark to fire it up.

I want to check the stator and the trigger but keep finding conflicting information on what wires I should measure the resistance on.

Could it be the rectifier? How do I test that.

Please help me out thanks.

 

[Hammer53]

The serial number on the motor is A188403

I got the following reads when I checked the resistance on the trigger and stator. I don't have a dva to check max volts.

Red/white to ground 1.128
Blue/white to ground .481

Blue to ground 1.123
Red to ground 1.122

Purple to white .770
Brown to white .000

 

[mllr90]

What did you use to check spark? Have you tried squeezing the primer bulb or squirting pre mix fuel into carbs while cranking?

 

[Hammer53]

I used an inline spark testing light. It was very faint but lit up on all cylinders.

I have not tried squeezing the bulb. However the spark plugs appear to be wet and I can smell gas when I try starting it.