View Poll Results: HELP STUCK 7.3
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Seized 7.3 help
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Trailering
Joined: Jan 2005
Posts: 15
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Seized 7.3 help
I have a 2000 7.3 that sat in my yard for 8 years,it originally stopped being used because of having fuel in the water, I recently tried working on it and tried turning it with a breaker bar but it is stuck. I pulled the drivers side valve cover off and removed the glow plugs to look inside with my inspection camera and the cylinders looked clean but the push rods look kinda rusty, the glow plugs were clean with some oil on them. Does anyone know if it would do any good to shoot a bunch of PB blaster down the push rods to lube them up and then try to break it loose or is this going to do more damage? I think I will be looking for a good replacement engine if anyone has one for sale. Let me know what you think I can do, Thanks, Bill
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,346
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From: Lake Hartwell, GA
Below is a link to a good thread with remanufactured engines if you decide to take that route.
Link: https://www.ford-trucks.com/forums/1...l#post20750408
In addition to what Ben said, try to remove the compression of the cylinders before attempting to turn the engine over by hand again. Remove all 8 glow plugs since you are there and it is easy to accomplish. You mentioned removing glow plugs, but no mention on if you put them back in and most likely have not made it to the other side.
Link: https://www.ford-trucks.com/forums/1...l#post20750408
In addition to what Ben said, try to remove the compression of the cylinders before attempting to turn the engine over by hand again. Remove all 8 glow plugs since you are there and it is easy to accomplish. You mentioned removing glow plugs, but no mention on if you put them back in and most likely have not made it to the other side.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Marvel Mystery Oil is the ticket. I got one freed up that someone had got about a 3rd of the way into pulling the engine then abandoned for a couple years. I just dumped it everywhere. Down the intake, injector bores, wherever looked good at the time. Let it set overnight and came back w/ a break over bar and started working it back and forth. Within a few minutes I had it showing signs of progress and not long after that she was free. Ended up being for nothing though. Block was cracked in the webbing of water jackets around some of the cylinders.
Tuned
Joined: Jun 2019
Posts: 496
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I'm with knottyrope and udsuth78. I would first remove all the glow plugs to release compression and any potential hydro lock. Then try to turn the motor pack and forth. If that doesn't work ether spray your PB Blaster which would have better rust penetrants in it and like udsuth78 said to let it set over night. Then come back and spray Marvel MO (or a thin oil) in the cylinders for lube and again work the crank back and forth. If it brakes loose do a couple of complete engine rotations then use the starter to turn the engine over. I've had success using penetrants and MMO to get an engine loose. GOOD LUCK!!
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