Flooded motor

mikeroe

Cadet
Joined
Oct 22, 2012
Messages
23
I could use some guidance here. I have a '90 Johnson 150 and it acts like it's flooded. I was on the water and was idling around probably to long an it died a couple times. It would start right back up and throttle up good. I should add I just got this boat and haven't quite got the feel of how far to move the throttle into gear to keep from bogging down and dying. Any way it died one last time but could really smell the gas. I have been trying to get it stated in the yard and can still smell a lot of fuel. I checked for spark and that's ok. It coughed a few times but just wouldn't catch. I pulled the cover off of the air box and there's a lot of gas just pooled on the bottom of the carbs. Should I just leave it alone for awhile or keep trying to get it to start. I'm worried about burning up the starter.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Flooded motor

Think it might be a good idea to pull the plugs to see what's up?
 

mikeroe

Cadet
Joined
Oct 22, 2012
Messages
23
Re: Flooded motor

When I bought the boat I put new plugs in an they still look new. I have had them out a few times and can smell fuel from inside the cylinders. This has also got me wondering if it may have jumped timing.
 

mikeroe

Cadet
Joined
Oct 22, 2012
Messages
23
Re: Flooded motor

When I bought the boat I put new plugs in an they still look new. I have had them out a few times and can smell fuel from inside the cylinders. This has also got me wondering if it may have jumped timing.
 

mikeroe

Cadet
Joined
Oct 22, 2012
Messages
23
Re: Flooded motor

I have a spark tester I got at work. I work at an auto parts store. Is an automotive spark tester the same as used on a marine engine? If it is flooded, would disconnecting the fuel line and opening the throttle all the way clear it.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Flooded motor

Set it at 7/16 " open air gap and see what you get.
 

mikeroe

Cadet
Joined
Oct 22, 2012
Messages
23
Re: Flooded motor

I found I had a bad stator. I had been getting a weak spark then I lost that. Replace the stator and now it starts. I've heard these Johnson 150's are cold blooded beasts and are difficult to get started. The question I have is now about the electric choke. When I try to start it cold I will choke it and crank it and it wont start. I then remove the cowling and switch the lever on what I assume is the choke. It then fires right up but will die. I then switch the lever back and I starts and runs fine. Is this the choke module. If it is then I would assume when I switch it I'm turning it off. This procedure to start it works but is real inconvenient because I have to prestart it before I leave the house.
 
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