Yamaha 40 run for 30-33sek and stops!!

[99yam40]

If it is not a meter made for these ignition systems then you will need a DVA adapter to hook up the meter to

[eddie004]

Now I have the engine running for idle as long as I want, but I haven't tried to put the boat in the water yet.
I had forgotten to connect the upper thermo switch, but when I connected it the engine did only run for 2seconds so I bought a new one but same thing
The engine would only run for 2seconds.
Then I took the orange / green wire from the cdi box and grounded it.

[eddie004]

So now it's running but is it the cdi box which is bad when I can't connect the thermo switch, I have tried boil water and about 43 degree Celsius it will switch on.

[eddie004]

Hello now I have had the boat in the water and the engine is running fine!