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Old 10 September 2015, 05:14   #11
Country: UK - England
Town: East Anglia
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Suzuki DF20 EFI
Join Date: Nov 2007
Posts: 3,589
I'm not familiar with larger engines like yours but I'd be following the route of fuel from tank to carb first. You could pop a hose off under the hood where the fuel goes to filter (I assume) and see if the primer is actually freely pumping fuel up for a start. Then check it's actually getting to the carbs.

I wonder what sort of fuel pump it has and if this might have a problem. Is there any sort of elec fuel solenoid in the system that's not opening?

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Old 10 September 2015, 13:54   #12
neil.mccrirrick's Avatar
Country: UK - England
Town: Oldham
Boat name: Miss Isle
Make: Solent 6.9
Length: 6m +
Engine: 225 optimax
Join Date: Jan 2008
Posts: 884
If the bulb pumped hard then you should have got some fuel into the carbs. If you unscrew the screw in the carb float bowls see if fuel comes out. If it does and the engine did fire ,( can't see the vid on an iPhone) then it's not pulling fuel through the system. That could mean no venting, bad fuel pump, hole in a pipe. Either way if the plugs aren't wet that's the problem

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Old 10 September 2015, 13:57   #13
Country: UK - England
Town: Shepherdswell
Boat name: Invicta
Make: Tornado 5.3
Length: 4m +
Engine: 75hp Mariner 2stroke
Join Date: Aug 2015
Posts: 59
Okay, well I've just finished rebuilding the fuel pump, new seals etc so that should be fine now, waiting for the proper battery to arrive now to try it
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Old 10 September 2015, 14:04   #14
Country: UK - England
Length: 5m +
Join Date: Nov 2005
Posts: 148
Fisrtly don't waste any more time turning it over, clearly something is not right.

Pull the plugs and see if you get a spark from each when turning over. If you have a spark then fuel supply is likely to be the problem.

disconnect the fuel tank and try a fresh can of fuel, after draining all the old fuel. Then its time to look at the carbs.
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Old 10 September 2015, 14:20   #15
Country: UK - Wales
Length: 4m +
Join Date: Sep 2015
Posts: 22
If you do get sparks drop some fuel into the air intake/intakes of the carb/carbs and see if she will run for a few seconds then cut out.
If it does then you have a carb problem ....
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Old 20 September 2015, 07:08   #16
Country: Canada
Town: Southern Ontario
Boat name: -Unknown-
Make: SeaMax
Length: 4m +
Engine: Merc/Minn Kota
Join Date: Mar 2012
Posts: 216
If the plugs are "dry" after continually turning it over (don't fry the starter), depending on which engine, it could be a goods fuel-pump in-let or out-let valve.

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