120 hp Carbs flooding now will not start

[ferro762]

I have a 85 120hp looper. the carbs will flood if kept tilted up for trailering. the other day when i got to the ramp it was flooded and i figured if i kept it running it would clear itself out. after about 10-15 min putting in the channel i shut it down and restarted it, it jumped up on plane and seemed fine. i slowed down while getting into skinny water and it stalled. from there on out it would stall if i didnt keep the rpm's up. then after constently having to restart it, it just cranks but doesnt start up. i dont know if it was doing it before but it seems like after i try and start it and it doesnt start it sounds like air is being released, kind of a squeeking air pressure sound. would the water pump failing cause any problems like this? thanks for any suggestions on where to start.

Matt

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

Very much doubt the water pump would do this.
When were the carb's last serviced ??
Just a quick 2 cents to get things going.

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

i just got the motor back about 6-8 weeks ago and the carbs where done then.

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

i just got the motor back about 6-8 weeks ago and the carbs where done then.

How has it run for the last 6 to 8 weeks ???
Why did it "go in" in the first place ??

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

i traded a 200hp for a 120 because i only have a 18ft cc. the guy i traded is a P.O.S shop owner who i trusted and gave me a non running motor after telling me it was running great. Im to trusting and got screwed. It went to the shop needed new carbs, timing, electric redone. got it back it sounded fine started right away. i took it out for the first time and it flooded. the next day started fine, i read up on it and i found that those motors will do that when left tilted up. the next time i went out i didnt put the motor all the way up when trailering. it started up great but would stay on plane and didnt have any power, come to find out the hub was spun. grabbed a new prop, went out sat and it again flooded and now wont turn over. will running the motor while flooded damage it? if in the shallow and maybe sucking up sand would it do anything like this and stop the motor?

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

Well I have a 1985 140HP Looper. I can tilt mine up , down or sideways and it will not flood. Sucking up sand will only impede the cooling system and maybe do damage to the impeller.
Can you check the,
Compression
Spark (with a spark tester)
Fuel pump delivery (crank it into a container with a hose from the pump outlet)
Put the muffs on or have it in the water to save the impeller when doing this.
Spark plug condition

These are the bare bones basics for everyone to begin a proper diagnosis for you.

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

Well thanks for the direction. i hope something works, i just want to fish.

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

Well thanks for the direction. i hope something works, i just want to fish.

If you can do those checks and post the results you can hopefully move forward with this in a hurry.

 

[Pokertrampp]

Re: 120 hp Carbs flooding now will not start

It went to the shop needed new carbs,

just curious, was the person that rebuilt/replaced the carbs the same guy that sold you the motor? stands to reason if he "screwed" you once he will do it again by using any shortcut he can when rebuiling the carbs. I have the 1988 version of your motor, and I can leave it tilted up for weeks on end with no flooding. If in fact the seller is the smae guy doing the repairs, I would get a second opinion.

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

just curious, was the person that rebuilt/replaced the carbs the same guy that sold you the motor? stands to reason if he "screwed" you once he will do it again by using any shortcut he can when rebuiling the carbs. I have the 1988 version of your motor, and I can leave it tilted up for weeks on end with no flooding. If in fact the seller is the smae guy doing the repairs, I would get a second opinion.

Excellent points made here.

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

no, it was a different guy. i have to much hostility built up to see this guy again. it was a son of a guy who works for me, theres some doubts in my mind about the quality of work but it seemed like the best option at the time.

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

no, it was a different guy. i have to much hostility built up to see this guy again. it was a son of a guy who works for me, theres some doubts in my mind about the quality of work but it seemed like the best option at the time.

Is "the son of the guy" an outboard mechanic or similar ???

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

yea he is a mechanic, i think he is a good one he just had alot going on in his life and im not sure if it hinders his work.

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

Today i took apart the fuel pump and it looked fine. I pumped the bulb and tried starting the motor after 2 tries it kicked over for a couple of sec then shut off. I did this a few times and it would only start after pumping the bulb and then only run for a few sec. It seems as though its using the gas that is manually pumped in it then not receiving anymore gas then it shuts down. does this make sense? could this be a bad fuel solenoid? Any suggestions on the first problem of the carbs flooding would problems from the pump or solenoid do this, or the floats? thanks.

 

[Pokertrampp]

Re: 120 hp Carbs flooding now will not start

Have you verified the fuel pump is working? Does it continue to run if you keep pumping the primer bulb?

 

[Fed]

Re: 120 hp Carbs flooding now will not start

Fuel coming out of the carbies when it's tilted up is normal, that fuel should go into the airbox on the front of the carbies and there should be a small rubber hose at the bottom of the airbox that will draw that fuel into the crankcase... I think. LOL

When you pump the fuel bulb up til it's firm the carby bowls should be full of fuel and that should be enough to run the motor for a couple of minutes. If it's only firing then cutting out straight away then maybe it's your starting procedure.

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

Do the fuel pump test in post #6

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

what's the best way to check the fuel pump to see if it's still good. its a vro pump, and i read somewhere that by disconecting one of the lines and pumping the bulb if gas comes out then its bad? is this accurate? would it be my best bet to replace the vro pump with a premix pump since i premix anyways?if the motor starts but only for a min after pumping the bulb, is it fair to say that the problem would be somewhere between the fuel pump and carbs?no alarms going off and it was running for the few times i took it out and when i started it at home every week. or even though it starts there are still thousand things that it could be? thanks

 

[kenmyfam]

Re: 120 hp Carbs flooding now will not start

O.K.
May want to remove plug leads from plugs for this.
Remove hose at outlet of pump to carb's
Put a temporary hose in place with one end at the pump outlet and one end going into a container.
Put the muffs on with water running or have the motor in a body of water to save the impeller.
Crank the motor and watch the fuel coming from the temporary hose into the container.
Strong consistent spurts = pump in working condition
Strong spurts to begin with tapering off as you continue = pump failing
Trickle or nothing = pump failed.

 

[ferro762]

Re: 120 hp Carbs flooding now will not start

sooo I tested the pump its good, I double checked the spark plugs and noticed one was more corroded than it looked the first time, so i changed them. the motor started up and kept running. so i thought, 2 days of messing with this thing all because i didnt check the sparks well enough. so after being excited about only spending $6 in plugs, i then noticed the motor sounded like it would drop off every few sec. i looked at the rpm's and they would sit at say 14 then drop to 11 or 12 then back to 14. I pulled the plugs again and noticed the top right was black when i pulled it out. so im guessing i blew a cylinder? im thinking ill be using my fishing kayak for a few months. thanks for all the help, i learned a little more, and hopefully wont let a $3 plug waste 2 days and a motor.