OK, so lets stick with Trawlerforum. To help those who missed the boatdiesel thread, here are the relevant posts. A bit long.
Me:
I am pretty sure that the Perkins has an energize to stop solenoid, so the ignition voltage doesn´t go there. There should be a stop button or similar. The ignition output from the switch typically powers the engine instruments.
Coopercanvas:
Thank you for responding . It has a push button but was disassembled . When it ran before we didn´t use that button ? the key started and stopped it . would the push button provide 12 volts positive to solenoid to shut of fuel and then remain open after ?
Me:
Well, if the key turned the engine off, that does sound like an energize to run solenoid. But OTOH, what was the push button for?
I just talked to a friend who has a Perkins 6.354 and he confirms that his engine has an energize to stop solenoid and a stop button.
If your engine is able to start and run now, watch the solenoid when you first turn the key and then see if it cranks. If it starts and the solenoid doesn´t move then it definitely is an energize to stop system. Then wire it that way using the stop button to stop the engine.
Coopercanvas:
Thank you .I have no history at all with this boat .A friend sold it for a sick friend .I got a good deal for this reason I am having to learn every step of the way . We brought it back from about 3 hours away , ran amazing at about 1200 rpm and so close to home we tried to run up to 2000 just to see if she would , she did and then flamed out . Like she was shot dead , no sound , no sputter , just dead .fuel system was horribly clogged . Thought if we put clean fuel to it and bleed she would crank. Nothing probably bleed it 10 times now with 5 different people , nothing !Started to think it took all the fuel crud into pump and now clogged . So in the mean time I was redoing the 12 volt and came across the button and key issue ?
Me:
The post on Trawlerforum also confirms it is an energize to stop solenoid. So make sure that the solenoid is in the rest position and stays that way when you try to start it. You can even remove the wire hooked to the solenoid to start it to make sure, then move the solenoid by hand to stop it after it starts.
Have you replaced both the external fuel filter, probably a Racor, and the internal on engine fuel filter? You might also try hooking up a temporary fuel tank to the fuel pump. Maybe the fuel lines are plugged. Use clear plastic hose from the temp fuel tank to the fuel pump and watch to see if the fuel gets sucked up when you crank.
So maybe there was something keeping the fuel solenoid shut (some crazy DC circuit) or the fuel system is plugged or ???? won´t let it start. Fuel, air, compression and cranking speed= start.
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That should bring everyone up to speed. The ball is in your court.
David