Engine won’t turn off?

Hi,

Just put the boat in the lake and cranked it up. It went fine, well it ran hot because it seems to not get any cooling water.

But when I tried to turn it off it didnt? I had to pull all the ignition coils (or atleast 6 of them). It went on like this for another 5-6 times until I quit for the day, another try today. Whatt??

First thing you HAVE to do is fix your cooling problem.
Was it running just as if you didn't turn the key off or was it "dieseling"? Was it "pinging" and making a bunch of noise? If that's what it's doing, you may have the engine so hot that it's igniting the fuel on it's own without spark.
If it's running just as if you didn't turn the key off it means you still have power to your ignition even though your switch is in the off position. Could be switch, hacked up wiring or a cross between your ignition "hot" wire and another "hot" or positive wire between your switch and your ignition.
Give us more info.

Hi again!

Ok, the cooling problem was due to a squeezed hoose behind the waterpunmp. My own stupid reasembly.. dooh..

OMC 350 rebuild 2000, otherwise "stock". Prob changed a bunch of gears on it.

It was kinda "chugging" a bit when I turned the key off, and the read on the "igniter (don't know the right word) droped from 18-19V to about 8V. Strange it did not "chugg" more..

The iginition problem, well.. I tried to spray on some "corroision" solvent spray..on all terminals/open connections and it seems to work.. Went out for a cruise and it turned off fine!! A couple of times. Just waiting for the wind to calm down now so we can go wakeboardning.

I dont think I got the engine so hot last time that it did self ignite, It did this just after cranking it up. I only ran it to about 180f (160 normal).

Tanks for the tips! Cheers!!

A pic of the first startup on land:



I'm trying to speed up the global warmening cause it's so freezing cold here in Sweden.