Ground out all the plug wires and then try and start it normally if the starter keeps spinning when you let off the key you need a new ignition switch. Actually you can test it without the starter connected. Isolate the start wire from the key to the starter and turn the key to start and let off like normal and see if you still have power to the start solenoid?
To test if the Key is sticking on, couldn't I just use a Volt meter on the Led going from the Start Relay to the Trigger on the Starter Soliniod and see if the 12 V comes and goes after turning the key?
Also would I not hear the Starter motor runing I would think it would be a different sound then the Power head.
I was also told by a friend that is a Mechanic to check for a bad ground as the engine should not be stopping/stalling once it is running unless I am experiancing Voltage Drop.
I am going to Test the Resistance on the engine + and - Wire Harness to make sure that I am getting good clean flow of power.
I told him if the Starter was burning out due to excessive AMPS wouldn't the 90 AMP Main Fuse Pop and protect the Starter? He was not sure he just found it strange that it started, ran for 10 mins fine and then Died and then the starter would not start and was non functioning. He said there is something else that is the cause most likely since it happended twice in a week now.
I do not think this related as the Starboard and Port Batteries and Motors are 100% Isolated today, but I ran into anouther problem this weekend while running with the one remaining engine. We where out for about 4 hrs fishing when the Boat died on the other engine after running well for 4 hrs. I tried to start the motor and it just Clicked. Sea Tow determined that it was a dead battery and tried jumping with Jump Box. It did not work. Sea Tow got me back to the dock. Back at home my Charger kept erroing out when trying to charge the battery. The Battery was shorted out and that is why the Jump Box did not work. Spoke to a Honda Dealer and he told me since the batteries where starting only not deep cycle all my Equiptment but to much strain on the small starting battery and fried it. Does not seam correct but either way My Radar, Deck Lights, LED Red Lighting, a Larger Radio and other Electronics should be running off a Deep Cycle battery. Stupid me to upgrade and add tons of new toys with out thinking do I need to upgrade my batteries. 2 New Starter batteries Wasted.
After some research I I decided to Go to a 3 Battery system as I will be offshore a lot.
I picked up 2 Interstate Marine Deep Cycle/Starting Group 29 SMR 29 Batteries to replace the Fried Starting Battery.
I will be getting a One Larger Interstate Deep Cycle House battery this week and can add a Second house battery if needed at a later time to extend the House AMP/Hrs if needed as I have room for 4 Batteries in the battery compartment.
I am going to add a BEP 117 Battery Combiner and a House Battery as I added Radar, Deck Lights, LED Red Lighting, a Larger Radio, and really want the ability to isolate but at the same time charge the 2 Starting and House batteries without worrying about Perko Switches to day the batteries are 100% Indpendant
This should at least clean up the Battery Issue.
I am going to try to get it installed Thur/Fri and try again this weekend.
Is there anything else I should be testing before adding the new starter into the mix?