'88 Force Outboard Carb Trouble... or.. Fire bad!

Speedtek

Cadet
Joined
Aug 17, 2007
Messages
23
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Hi all,
Today was almost disasterous in the worst possible way. I've finished the bulk of the restoration of my '88 bayliner cuddy and decided it was time to get the motor kicking. Here's what happened.

I pumped the fuel bulb until hard (well mostly anyway, is it supposed to get rock hard??). Put the key in the ignition, pushed the choke on and started to turn it over. After a couple of backfires I saw smoke coming out of the cowl and saw flames... PANIC ... I dont know how i did it so fast, but i managed to remove the cowel, get the fire extinguisher (thank god they make them required equipment!) and put it out.

After composing myself and finding no damage besides some slightly warped carb covers, I started to diagnose the problem. Carefully I ran through the prior sequence of events watching the carbs.

When I choke the engine, I get a glut of fuel from the top carb and it ends up dripping out and down onto the lower carb and below. I know this should not be the way it works! I took off the float bowl and adjusted the float so that it _should_ close earlier thinking that it may be sticking or set too high and not seating.

I try again, and blegh... more fuel pukes out the carb. SO... I'm feeling stuck, a bit confused, and terrified of my engine bursting into a mushroom cloud of flames.

Any suggestions??

Thanks!
 

Speedtek

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Joined
Aug 17, 2007
Messages
23
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

Forgot to mention, its a 125 HP
 

MikDee

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Jun 6, 2007
Messages
4,745
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

I've recently been doing this, and going thru this same thing myself! Twice now I found some debri in the float pin, and gas was pouring out of each carb,,, but at different times,,, once on the lake last wk, I thought I was gonna need a tow, but managed to get the bottom carb bowl off, and jiggle the float, it saved the day! and I was able to get home., and guess where my tools were?,,, that's right,,, In my truck! forgot to grab them on the way out. Today took off the upper carb, then removed the bowl, & needle, blew thru it, and dark grit came out? almost like fine sand? don't know where that came from, but put it back together afterward, and all was fine!
 

Speedtek

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Aug 17, 2007
Messages
23
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

I'm almost willing to bet its varnish and gunk from a 20 year old tank... wonder if there's a way to clean a tank out?
 

Delta 1

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Aug 9, 2007
Messages
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Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

I know this is probably a dumb question Speedtek, but was the engine tilted up?
 

Speedtek

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Joined
Aug 17, 2007
Messages
23
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

No i had it tilted down into a barrel of water... Actually it was tilted back a couple of degrees but nothing extreme. The motor was in contact with the trim actuator.
 
Last edited:

eurolarva

Rear Admiral
Joined
Jun 24, 2003
Messages
4,182
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

You mentioned the motor is a 125. Do you have the model number or know exactly what year it is? Does the motor have a choke or a fuel enrichment devise?
 

QuadManiac

Petty Officer 1st Class
Joined
Jul 2, 2007
Messages
391
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

After cleaning the debris out of the fuel delivery system, is there any issue with adding an inline fuel filter (like I have to all of my quads), just in front of the fuel pump, to these motors?
 

Speedtek

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Aug 17, 2007
Messages
23
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

Hi there. Its a 1988 Force 125 HP model #1251X8C.

It has an electric choke that is activated by depressing the ignition switch.

Its when I use the choke that the bulk of the fuel comes out of the carb. I found that by starting the motor at 3/4 throttle in neutral seems to prevent it as well as helps the motor start quicker.. but, a fuel dump in an enclosed space like the cowling is not something I look forward to in the future, so I need to some how find a solution to it. lol
 

bowhuntrrl

Petty Officer 1st Class
Joined
Mar 26, 2003
Messages
320
Re: '88 Force Outboard Carb Trouble... or.. Fire bad!

Sounds like the carbs need a rebuild, too much fuel, sounds like sticking floats. The only filter I would add is a fuel separator. The little inline ones are worthless, especially with today's E-10 fuel.
 
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