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Old 11-08-2011, 05:38 AM
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need help bleeding fuel system

A friend of mine called me yesterday and wanted help fixing a 02 7.3. It was leaking fuel out of a line running from the filter to the back of the motor on the passenger side. I took it off ther truck brazed a sleve over the leak and put it back on. The truck cranked right up and then died and won't start back up. Which I kinda expected. Now how do I bleed the system? Also I don't really understand this fuel system. Is the high presure oil pumping the fuel in each injector or is the there a injection pump somewhere I don't know about? When I turn the key with the fuel filter off, is the canister suposed to fill up?
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Old 11-08-2011, 06:07 AM
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There is no injection pump. The filter housing will not fill with the top off and the filter removed (so you can't run one without a filter).

The fuel system, to the filter housing, self purges quickly through the return line. The pump will only run for 15-20sec when you first roll-on the key so, do that a few times to know you've refilled everything. The yellow lever behind the filter is a drain and a good way to determine of there's fuel in the bowl (it drains from a metal tube against the motor, look over the top of the pass tire)

There might be air in the head that needs to be purged but, it will actually start on the 4cyls on the other side The computer needs to see at least 100rpm to even try to start the engine (normal cranking is 150-200) so don't bother trying to start if it's not cranking at a normal speed.
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Old 11-08-2011, 06:41 AM
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Thank you for the reply, It was cranking at normal speed and was firing one cyl but not every time over.
With the filter canister on, turned the key repetitively and still would not start. Jumper cables hooked to my truck keep the batteries from dying. What can I do now?
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Old 11-08-2011, 07:55 AM
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Again, have you determined that the fuel bowl is refilling?

Open the drain lever by sliding it to the side and look for fuel to run out of that tube. Close it again and cycle the key on 3X for 20 sec. Open the drain again. There should be a lot of fuel running out to know the bowl has refilled. Cycle it 3X again to refill.

The IPR sensor is located at back of the fuel bowl. Could you have knocked the plug off while working on it?
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Old 11-08-2011, 08:18 AM
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That makes sense, ill do that when I get off work. The fuel pump is running, I put my hand on it an had my buddy turn the key. Could this still be the problem?
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Old 11-10-2011, 08:35 AM
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We ended up putting an air hose in the tank and taking the filter off to purge the lines to the filter and the thing started right up. Thanmks for the help.
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Old 11-10-2011, 09:04 AM
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I'm not sure "purging" is what happened though.... (unless the pump is dying and really unable to draw from the tank)

Sounds more like you blew out a clog somewhere. Either in the line or from all the screens in the tank (there's actually quite a contraption in there ). Here's what it looks like and a resolution -> Welcome to guzzle's In-tank Hutch Mod Web Page

In any case, this might not be over for you because that should Never be necessary
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