95 4x4 7.3 f250 how to prime it? - Ford Powerstroke Diesel Forum
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Old 02-09-2014, 05:05 AM
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95 4x4 7.3 f250 how to prime it?

Hi, New owner of a 95 f250 ext cab 7.3 150k miles 4x4. Thanks for the great forum...
I bought the truck and after starting it from being parked for 6 months, immediately I noticed a leak apparently from the fuel valve drain.
Si I removed and replaced the fuel bowl for replacing the O rings on the fuel bowl drain valve. The thin O ring on the valve stem was hard like a rock.

How do you prime the fuel system after the bowl has been removed, I had to disconnect every hose that was attached to the bowl. Put a new filter but after this step I don't know how to move forward to get it to start.
Thanks.

Another question I have is if the glow plugs always come on before starting the motor or only when it's cold?

Thanks.
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Old 02-09-2014, 05:34 AM
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I've never had an issue re-starting my truck even AFTER fuel pump replacement and bowl removal. Just turn the key to the ON position and wait for your WAIT TO START light to go off. Crank for a few second and it should start up.
I think the glow plugs go on every time. The length they are on depends on the temperature. They should stay on briefly in warm weather and a few seconds in cold....
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Old 02-09-2014, 05:55 AM
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Thanks for the reply, just wondering where the air goes from the empty bowl. it must go back to the tank I guess!
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Old 02-09-2014, 08:03 AM
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Truck wont fire up, there is fuel in the bowl, new filter and new batteries.
The glow plug light does not come on at first start, it's 50 degrees outside, should the glow plug be turning on before the motor is turned over? Could it be a glow plug fuse? Any ideas?

Thanks.
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Old 02-09-2014, 08:22 AM
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Turn ignition to the on position have someone check to see if there is power to both sides of the relay. If not u can cross both posts with a screwdriver for about 10 to15 seconds, then try to start

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Old 02-09-2014, 08:29 AM
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Found a 40 amp fuse blown in the power dist box. #22 for the glow plugs. Now I need to find a fuse like it.
Thanks.
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Old 02-09-2014, 09:24 AM
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That's the PCM and fuel bowl heater plug too iirc

To prime it, fill bowl with fuel, crank it, purge air at shader valve (valve stem on side of bowl) crank and repeat till it fires up
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Old 02-09-2014, 09:27 AM
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Your fuel heating element has shorted out inside the bowl blowing that fuse .Many either disconnect the wire or in my case cut the element out . The solder joints become loose with the element touching the bowl and Boom .
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Old 02-09-2014, 09:58 AM
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Moor like pfft, it's just a fuse
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Old 02-09-2014, 10:01 AM
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Ok, thanks. Learning the new truck. Replaced the fuse #22 with a 40AMP. and It turned the glow plugs on for 10 sec and it fired right up. The operators manual shows that it should be a 30AMP fuse. Now that I know it starts I will replace the 40A with a 30A fuse.
The bowl heater looked Ok when I removed it and reinstalled it.
Thanks for all your replies.
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