Reviving a rolled 7.3 to start - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 7 (permalink) Old 06-19-2019, 07:19 PM Thread Starter
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Reviving a rolled 7.3 to start

I bought a rolled 03 F350 CC with a 7.3 for the axles. I assume the engine was running at the time it went upside down. The entire front clip is in great condition, indicating there is no impact damage to the motor compartment. All the oil leaked out (I assume from the period it spent upside down). The truck has been sitting for at least 4 months. The wrecker damaged the fuel tank so it is not usable. I added oil and cranked the motor briefly, which did spin fine. I'm reluctant to crank it more with out some input from you guys.

Can I gravity feed the fuel system with an elevated can to get the motor to start? or does the system have to have all the pressure from the in tank pump to start?

What else should I look for before trying to start it.

Thanks in advance

2002 7.3 psd stretch window van, 140K Dp tuner F5 7 tunes, 4" turbo back, Wrapped exhaust, bellowed up pipes, Bilstein Hd's, RiffRaff RFX, HPX & CVC & AIH delete, 235/85/16 Michelins, Hid's, Auto-meter tranny temp, boost and pyro gauges, Mag-Hytec deep trans pan, towing mirrors, dynamat doors, Alpine 1000w blaster
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post #2 of 7 (permalink) Old 06-19-2019, 07:34 PM
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Electric fuel pump is located inside the frame rail, below drivers front door, clipped to the brake lines. When I was working out my Hutch Mod issue I attached fuel line to suction side of pump and dropped into a bucket of diesel fuel to run.

2002 F350 7.3L / 4R100 - 4WD CC DRW 8í Box, AIH Delete, Gauges- Pyro, Trans Temp, Boost, Fuel Pressure, TS-6 tuner, Zoodad Mod, Mishimoto 31 row Trans cooler, Mobil 1 ATF, Trans return line ATF filter, Hutch/Harpoon Mod, Air Lift Load Lifter 5000 rear air springs, Rancho 9000 shocks, Timbrens on the front.
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post #3 of 7 (permalink) Old 06-19-2019, 11:35 PM
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Are you sure ALL the oil leaked out?? If so you have 4 gallons of oil sitting in the intake/turbo/ intercooler. How much did you add?? I would pull the intercooler hoses and make sure they are not full of oil. Oil/fuel/water in a cylinder can cause a engine to hydrolock and do a lot of damage. If it turns fine by hand then you should be fine if you have any issues pull the glow plugs and spin it over to blow out any fluid. I would replace fuel filter, check HPOP oil level and do as Big Horn said.
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post #4 of 7 (permalink) Old 06-19-2019, 11:37 PM
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ICBW but I think you need some fuel pressure on the injectors - I know you do on the 6.0 litre and I assume the 7.3 is similar. I'm talking more pressure than you'd get from simply elevating a tank - like around 50 psi. You can buy a basic 12V inline fuel pump that will deliver that pressure for not a lot. Mine is so old I can't remember what I paid for it but maybe $30 or $40.

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post #5 of 7 (permalink) Old 06-20-2019, 05:01 PM Thread Starter
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Thank you all, that is the kind of info I was hoping for. I did add 14 quarts of oil. It does turnover, the intercooler check is a good idea. and the fuel supply tips are great, hopefully this weekend I can get to run.

2002 7.3 psd stretch window van, 140K Dp tuner F5 7 tunes, 4" turbo back, Wrapped exhaust, bellowed up pipes, Bilstein Hd's, RiffRaff RFX, HPX & CVC & AIH delete, 235/85/16 Michelins, Hid's, Auto-meter tranny temp, boost and pyro gauges, Mag-Hytec deep trans pan, towing mirrors, dynamat doors, Alpine 1000w blaster
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post #6 of 7 (permalink) Old 06-22-2019, 10:45 AM
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Make sure you reset the role over cut off switch in the panel under the glove box. Wont start if it rolled over unless its pushed back in. In fact, your fuel pump will probably work again if its reset.

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post #7 of 7 (permalink) Old 06-22-2019, 04:46 PM
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Quote:
Originally Posted by Absolute View Post
Make sure you reset the role over cut off switch in the panel under the glove box. Wont start if it rolled over unless its pushed back in. In fact, your fuel pump will probably work again if its reset.
Good advise.
It's actually an inertial cutoff switch that activated on an impact, but a rollover (unless very gentle) would do it.
But definitely check the switch (located above the passenger side kick panel just in front of the door pillar). There's a hole where you can stick your finger in and push the button on the top of the switch to reset it.

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