kicks over then dies in a couple secs

[jeff]

hey guys, happy new year ,i tryied to start my scr 2800 last night but it just kicked over for two secs then died,,
i tried again right afterwards and nothing,, i waited about 10mins and she kicks over and dies again in a couple secs,

what could that be? i have a full tank

thanks

[jeff]

fluids are all topped up

[biggerseagar]

What engine do you have?

Roger

[jrsick]

Jeff, do a search for "oil pressure switch" and see the thread started by Hairy Lady.

[jeff]

hi i have 2001 in out mercruiser

[jeff]

i will check out the oil pressure thread,,thank you

[mmwjr]

2001 2800 SCR, what engine(s)? Yep OP switch is first thing that comes to my mind. Do you have an electric fuel pump? If not then no OP switch.

Carb or fuel injection?

[Phillbo]

You really need to provide more info on the engine. The boat modle and Merc really tells us nothing. Help us to help you.

For instance if I had an engine issue I would post that my 2004 Merc 6.2L MPI would not start and keep running.

[jeff]

310 hp gas 7.4l fuel injected

[shrew]

Wires, plugs, fuel filter and the pre-filter have all been gone through? You can hear the fuel pump pressurizing? Wiggle the shutoff switch? How old is the fuel? has the fuel been treated? Did you try bypassing the fuel and pre-filter and rigging an external tank to the fuel pump?

[jeff]

pre filter ,,were would that be shrew?

[mmwjr]

I believe shrew is refering to the filter/screen on the gas pick-up tube inside the gas tank. There could be debrie in the tank that gets sucked into the filter starving the engine. Once engine dies it floats away allowing gas flow again. Does it die every time you start it or just sometimes?

[jeff]

Originally Posted by mmwjr

I believe shrew is refering to the filter/screen on the gas pick-up tube inside the gas tank. There could be debrie in the tank that gets sucked into the filter starving the engine. Once engine dies it floats away allowing gas flow again. Does it die every time you start it or just sometimes?

its not starting at all right now but it was starting then when i cut it out will not start again unless i crank it a lot and i might get lucky

[njones]

Lanyard connected to safety kill switch?

[mmwjr]

Yep first easy question is if the saftey switch is in the run position. I am assuming this is not the problem because it runs sometimes.

Did you check for spark? If spark then a fuel issue. Spray some starting fluid into the air intake and see if engine runs on that for a few seconds.

[jeff]

thanks guys I will keep you all posted

[njones]

Originally Posted by jeff

thanks guys I will keep you all posted

Get it going?

[CGG]

Make sure your kill switch is in the correct position.

[forbes210]

Had a similar behavior once on my mercruiser 5.7. It came out to be rotted bed electrical connection of fuel pump.