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Old 05-04-2013, 05:23 PM
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Fuel leak issues

Hello. New here. 02' 7.3 liter. I have replaced my fuel pump and the O rings on the relief valve. Still have alot of fuel leaking into the valley. Are there crush washers where the braided lines go into the head? Is there a rebuild kit I can get for the braided lines? Im pretty sure this is where I am losing the fuel. I loosened the lines to allow air to get out after replacing the pump and got it running very roughly. The lines blew off and I'm not sure if there were crush washers there or not? I can get it running and it will start right after but if I let it sit, it loses the built up pressure and will not start.
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Old 05-04-2013, 05:55 PM
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Braided lines are the high pressure oil lines.
But there is a fuel lines from bowl to back of pass side head that has a clamp around it. Rubs holes in them.
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Old 05-04-2013, 06:21 PM
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Quote:
Originally Posted by jesilvas View Post
Braided lines are the high pressure oil lines.
But there is a fuel lines from bowl to back of pass side head that has a clamp around it. Rubs holes in them.
Thanks. That makes more sense now. My driveway looks like a vehicle has been murdered. I thought the diesel was just picking up oil and ...hell I dont know what I thought. Are there crush washers on those lines? Originally this began with what I thought was the relief valve O rings going out. I replaced those and I mistakenly loosened the HP oil lines thinking they were fuel lines. My intention was to bleed the air out of the fuel sytem. After that I replaced the pump. I will further inspect the steel fuel line and see if it has a hole in it. But I now realize I've got an assload of oil in the valley. Actually sounds like a good thing:/ I digress. So would those oil lines letting air pass create compresiion issues? The engine sounds good but is severely under powered. I tightened them as tight as I could and it helped a bit but I'm still leaking oil and still real sluggish. I also have 2 1/2 month old fuel in it. Is that old enough for it to deteriorate? This is my first diesel and I'm pretty clueless. Thanks again for any input.
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Old 05-04-2013, 06:26 PM
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A 7.3 is sort a regular diesel. Read how HEUI works.
How HEUI works and best to convert
I know those HPOil hoses use a quick connect to take off, so idk how you loosened them.
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Old 05-04-2013, 06:39 PM
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The lines I loosened are the braided lines that go from the bowl to back of each head cover. i used a 3/4" open end to get to them. They are underneath the turbo tubes near the rear of the head covers. I will try to get a pic up tomorrow. Thanks again.
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