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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 01-20-2013, 09:43 AM   #1 (permalink)
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Fuel Leak Somewhere.

I have a black runny diesel fuel leak coming from pass. side of block all the way down and out inspection plate on tranny. Sometimes it runs down the tranny cooling line and i have no clue where its coming from. The back 2 cylinders on pass side are wet below valve covers but i tightened them up and hasn.t gotten any worse but still have bad leak. What could it be?
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Old 01-20-2013, 10:16 AM   #2 (permalink)
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return line
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1992 F250 XLT 4x4 Super Cab 7.3 IDI E40D 3.55 ATS 088 4"R.C 360k
1982 MBZ 300SD W126 California model w/Sunroof, no EGR
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Old 01-20-2013, 10:31 AM   #3 (permalink)
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wheres it connected? to the last injector?
and how long is it?
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Old 01-20-2013, 11:10 AM   #4 (permalink)
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Follow back those lines that go from injector to injector, you'll find it at the back of the motor. I'm not sure precisely how it routes but it goes back to the tank selector valve.
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1992 F250 XLT 4x4 Super Cab 7.3 IDI E40D 3.55 ATS 088 4"R.C 360k
1982 MBZ 300SD W126 California model w/Sunroof, no EGR
1997 Audi A8 Quattro 225k Warm/Cold packages
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Old 01-23-2013, 04:56 PM   #5 (permalink)
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Push down on all of the return lines and see if one doesn't squirt fuel out.
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