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Had just a terrible problem with sediment in our fuel clogging up our fuel line filters, so we're in the middle of getting all that crud out of the tank now and getting new filters in place.

Anybody know how we should go about getting our diesel engine started again after completely draining and refilling the tank and fuel lines?
 

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Make certain you have clean fuel from the tank to the primary filter. Remove both your primary and secondary fuel filters and clean the housings well. Fill the filters with clean fuel.
Bleed the engine as it says in your manual. Do not, under any circumstances force any of the dirty fuel into your injectors, so break the fuel lines at the injectors first, though you must still bleed the engine in the correct order.
When you are absolutely positive that you are getting clean, air free fuel to the injectors, connect the fuel lines to the injectors and try to start the engine. Get plenty of oil absorb pads and be liberal with the fuel. It will harm nothing to be dripping over the engine around the fuel system while you are bleeding it.
Hopefully your engine has a preheat, as that will help greatly. Do not crank too long at one time. Unless you know exactly what you are doing, resist any suggestions to use starting fluid.
If you can not get it running, you will need to check if the injectors are spraying fuel. If they aren't, it is not an especially expensive thing to send them to be refurbished at a professional shop.
Remember, your battery must be strong enough to get the engine turning at a good clip. If your battery is not up to that task, you risk doing some damage to your starting system from low voltage.
Good luck.
 

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If the engine doesn't start in a few seconds (10 maybe 15) CLOSE the raw water intake. As the engine turns water is pumped in but not blown out by exhaust gases. Water can fill the exhaust line then into the cylinders and PRESTO you have hydro lock. And thats bad. Once the engine starts open the raw water intake.
 
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