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Old 15 January 2011, 05:48   #11
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Spartacus - Pull cord is a rainy day project, so long as it isn't directly related to the issue i'm happy to leave it for the time being. The video only showed one pull just to show what is happening. But i've lost count allready of how many attempts i've made at starting it.

The plugs are new, and the primer bulb is hard, and carb bowl full.
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Old 15 January 2011, 10:32   #12
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Get the lower unit on it and try to start it in water. The lack of backpressure won't be helping.

What throttle setting are you using to try starting it, and is the choke on?
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Old 15 January 2011, 10:48   #13
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I've tried choke on and off, and different throttle positions, no difference.

Someone else mentioned about not having the L/U on also and losing back pressure, so i will try that out tommorow. I honestly didn't think it was the sort of thing that would stop an outboard from starting all together though...
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Old 15 January 2011, 12:46   #14
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What about lifting the tank higher and having a friend pressing the prime bulb doing start-up. Having similar engine, start easily without back pressure. Base on the You Tube video still suspect fuel supply issue.

Newer tested this, but how abut spraying gasoline( at Your own risk...) to the inlet of the carb before/during start.
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Old 15 January 2011, 15:57   #15
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Originally Posted by Bus_Boy View Post
I swapped the earth wiring around and now i am getting spark. The motor started a couple of times for about 1/2 second and then stopped. There's also fuel coming back out the carb through the intake now...
I have a 2003 Mercury 30hp (lightening model) which is basically a tohatsu. I had a similar problem and the marine dealership told me they are a problematic engine to get going, but once its fired and running it will start first pull. They advised me to pull the choke out half way for the first two pulls and then put it back in and it should start. This worked for me as previously i've spent 20 to 30 pulls trying to get it going with no joy.

Not sure if this will help but its what i was told.? Good luck.
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Old 15 January 2011, 21:21   #16
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Clean the carb, check float height, check fuel pump and try again... It sounds fine as she fired on first pull ! ...
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Old 15 January 2011, 22:09   #17
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With regards to fuel pump, i have seen that there is some type of gasket, that sits between the pump and the block, and not a part of the actual unit itself.

I saw it in the spares catalouge, and noticed that mine dosen't have this, is it nessacary?

If the fuel pump itself is faulty, would the motor still start with just the fuel in the carb bowl? I'd expect it would start and run on just the fuel in the bowl until it ran out, much like it would still run with the fuel tank dissonceted....
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Old 16 January 2011, 05:16   #18
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Originally Posted by Bus_Boy View Post
With regards to fuel pump, i have seen that there is some type of gasket, that sits between the pump and the block, and not a part of the actual unit itself.

I saw it in the spares catalouge, and noticed that mine dosen't have this, is it nessacary?

If the fuel pump itself is faulty, would the motor still start with just the fuel in the carb bowl? I'd expect it would start and run on just the fuel in the bowl until it ran out, much like it would still run with the fuel tank dissonceted....
Yes, you need to have that gasket ...

And yes, The engine will still run with just the fuel in the bowl.
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