fuel filter - Ford Powerstroke Diesel Forum
6.9L IDI Diesels Technical discussion of topics related to vehicles powered by the 6.9 Liter In-Direct Injection Navistar engines.

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post #1 of 10 Old 12-09-2008, 08:30 AM Thread Starter
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fuel filter

does anyone have any tricks to changing the fuel filter on my 6.9, i bought it and it had water in the filter and kept dying so i need to know how to get it started and bled and the engine is cold wich will probably make it harder
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post #2 of 10 Old 12-09-2008, 12:59 PM Thread Starter
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are you serious? no one knows anything on here. wow i thought some one would give me some hints
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post #3 of 10 Old 12-09-2008, 01:04 PM
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Just prime the filter. Fill it with fuel before you put it on, and it should bleed itself. There is no bleed cycle on a Powerstroke, so I can only imagine a 6.9 would be even easier. It'll run rough for a bit, but it will turn over and smooth out.

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post #4 of 10 Old 12-09-2008, 01:08 PM
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I installed a electric pick up pump to help feed the system. Primes the system fast.

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post #5 of 10 Old 12-09-2008, 06:07 PM
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So you did change the filter, right? Fill the new filter with diesel and install it.

If it has a problem with air and is too difficult to start you can try putting a bit of gasoline on a rag and hold it up to the intake while some one cranks it. Don't hold it too close or too long there or you might lose the rag or you might cause the engine to run-away on you. Whatever you do, don't use ether. It'll cause major damage to your glow plugs.

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post #6 of 10 Old 12-10-2008, 04:42 PM
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Changing the fuel filter on a 6.9 is really easy. Its like changing a oil filter pretty much. Just fill with diesel to minimize air in the system.

If you got a lot of water in your filter though , is your water/fuel separator bypassed? Also if it starts then runs a few seconds then stalls its probably air getting in the system.
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post #7 of 10 Old 12-11-2008, 08:04 AM Thread Starter
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my filter doesnt have a drain on the bottom for water, so i bought a new one filled it, put it on and then it started after some cranking and then died what should i do
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post #8 of 10 Old 12-11-2008, 10:38 AM
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The 6.9 had a separate water to fuel separator, it is on the driver side firewall close to the hinge for the hood, Its not integrated like the later ones on the 7.3.

It starting running for a few seconds then dying is not uncommon expecially if the fuel filter wasn’t completely full before putting on. That is the air in the system from the filter change typically you’ll just need to crank on it 10 to 20 seconds , if it hadn’t started by then wait a couple min to let starter cool down and repeat and it will get the air out. Oh and hold the throttle wide open when cranking.
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post #9 of 10 Old 12-11-2008, 12:44 PM Thread Starter
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then do i hold the bleeder open for a few minets wile it idles to get the air out?
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post #10 of 10 Old 12-11-2008, 04:15 PM
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Take a rag and soak it with a liberal amount of gasoline, and place it near the air intake as a friend cranks the engine. It will run on gasoline fumes till it gets the air bubbles out of the diesel. Just be prepared to remove the rag when the engine lights up. You don't want it revving too high. Just let it sniff the gasoline and pull it away. Regulate the speed with the gas-soaked-rag near the air inlet.

All the air will get forced back to the fuel tank as the fuel pump primes the system. You shouldn't have to worry about the bleeder.

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'08 F350 Dually KR - Spartan'd
'07 F250 CC SB 4x4 XLT - SCT /w Innovative Tunes
4 '09 & '10 E350 6.0l ambulances
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