Suzuki 2 stroke Leaking Fuel

[Ref1910]

Hello any advice would be great. I recently changed my fuel tank on my Suzuki 2 stroke outboard and since then its drinking fuel (10 Litres in 15 mins on high idle it wont sustain normal tick over) , creating lots of fuel slicks on the surface of the sea and running like a pig. I have googled like you do and it suggest the VST or float is sticking. Is this a cheap fix or am I looking at a new engine?

 

[Ref1910]

Also the priming bulb wont firm up on initial start.

 

[greeny]

I can only assume its a remote fuel tank because you state usage of 10 ltrs in 15 mins.
So, leak isn't coming from new tank connections etc.
Therefore,
Float not closing the shutoff valve. It could be sticking or the float could have a hole in it so it doesn't "float" anymore. Priming bulb stays soft because the valve is not shutting and you're just pumping fuel into the chamber. Using a lot of fuel because it is just flowing continually into the sea and not being shut off by the valve. Maybe?
What size outboard is it?
Very doubtful / most unlikely you need a new engine.

 

[Ref1910]

Thanks for your reply. Easy fix??

 

[VicS]

Almost certainly what Greeny says

Needle vale not shutting due to sticking float or dirt on the seat . Probably the latter introduced while changing tanks

 

[Ref1910]

Its a 30hp Suzuki 2 stroke.

 

[The Q]

Is it old enough to not Like E10 fuel? So the plastic and rubber fittings are dissolving?

 

[Ref1910]

Always used E5. Thanks for your reply

 

[stu9000]

Thanks for your reply. Easy fix??

Carbs are not that complicated. Check out some YouTube videos. When you take the carbs apart you will find each one has a plastic float in the bowl. The float pushes up onto a lever/pin when full which cuts the flow of fuel. They can get a bit gummed up.

Also check the fuel line is connected properly to the engine.

Eyeball the engine to see if you can see where it is leaking.

 

[ianat182]

Does your engine use the choke to start ? If so, it may not be returning afterwards ,-poor linkage and/ or a stuck float in the carburettor. Can you find the engine servicing manual on the internet- You'll need the Model No/SerialNo for specifics.

 

[greeny]

Its a 30hp Suzuki 2 stroke.

OK so a bit bigger than your average tender outboard.
DF30? - 3 carbs I think so a bit more complicated. Same principles apply though. As someone else said, see if you can find where the leak is starting by having a good look round, maybe while you're pumping the fuel with the hand pump bulb. If the float in one of them is sticking possibly due to crap then it's worth cleaning all 3 carb bowls out any way. If the rubber bits are rotting due to E fuel then they will all be in the same condition so change all the rubber bits in the carbs. I've not had to do that on any of my 4 outboards though and I use E5 all the time in them.