Unseize an engine
Senior User
Joined: Jun 2004
Posts: 249
Likes: 1
From: Sacramento, CA.
Marvel Mystery Oil is the way to go. Put enough in each hole to cover the piston. Remember they are in there at an angle (I think you said it was a V8)
Let it sit for a couple of days and then start wiggling back and forth with a breaker bar. It should break loose. And like someone else said remove distributer and prime the oiling system.
Good luck.
Let it sit for a couple of days and then start wiggling back and forth with a breaker bar. It should break loose. And like someone else said remove distributer and prime the oiling system.
Good luck.
Lead Driver
Joined: Aug 2003
Posts: 7,592
Likes: 10
From: **** hole San Jose ca.
Just so you have something to think about. Which will get down in and around the rings the best. oils like Marvel Mystery Oil or Deisel or stuff like PB blaster..Right out of the olden days. Well it's diesel & Kerosene mixed work wonders for getting in to tight places and freeing them up.. My 2 cents
orich
orich
Thread Starter
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Freshman User
Joined: Feb 2003
Posts: 27
Likes: 0
From: Madison, MS
Okay. I went to Wally-world tonight and bought a gallon of Marvel's Mystery Oil and, using a funnel with a flexible tube, slowly poured it into each spark plug hole until it overflowed. I stuck the spark plugs back in finger tight and now i wait.
I think I need a little more clarification on the procedure to prime the oil pump. You pull the distributor out and then what?
I think I need a little more clarification on the procedure to prime the oil pump. You pull the distributor out and then what?
Fleet Mechanic
Joined: Aug 2007
Posts: 1,806
Likes: 246
From: Piney Woods of East Texas
With the distributer removed you will need a 5/16" or 1/4" socket to turn the oil pump shaft. A 6-8" extension so you can use a cordless drill to spin the shaft ccw. You will know when every things gets circulated by the load on the drill. Make sure you mark which direction the rotor is pointing, you will need this to reinstall the distributer for correct timing.
Postmaster
Joined: Sep 2004
Posts: 3,166
Likes: 2
From: wi
i used to use mmo untill i found this stuff KanoLabs.com it aint cheap but itll get the job done!!!
Laughing Gas
Joined: Nov 2000
Posts: 1,072
Likes: 3
From: tulsa
I used PB blaster on my stuck motor, Let it sit for a couple of days after filling each cylinder. Drained the oil and put in new. Hit the starter and it turned right over. Good luck hope the mmo workes.
Senior User
Joined: Mar 2008
Posts: 107
Likes: 0
From: norman indiana
i have also saw people use the grease gun trick with good results . (older tractors also ) he used compressed air to remove most of the grease out of the cylinder before starting . (just spraying the air into the cylinder and leaving enough room for the grease to come out the same plug hole ) then used alittle pentatrating oil to wash the cylinder , then air again until the cylinder was clear . still smoked like hell but it cleared up after a while . but he really didnt have anything to lose either ! 
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We just tried to get the dang things to turn so we could get everything seperated
will try that on the next one I have to breaK loose 
Lead Driver
Joined: Aug 2003
Posts: 7,592
Likes: 10
From: **** hole San Jose ca.
Why not just fill the cyl with any oil type of liquid since it solid the same as grease and won't compress then top it off with the grease. Then you can maybe blow it all out the air or when you turn in motor over..my 2 cents
orich
orich
Posting Guru
Joined: Jun 2002
Posts: 1,288
Likes: 1
From: redding U.S.A.
the grease works well because it is extremely viscous. An oil may just seep past the ring gaps as you apply pressure.
If the grease works to break the motor free, just leave the spark plug out and cycle the motor to push out most of the grease. Then rotate until the piston is down far in the bore and put some gas or kerosene in there to thin out the grease. Cycle it again or blow that out with compressed air and whatever is left will burn out, assuming the engine starts!
If the grease works to break the motor free, just leave the spark plug out and cycle the motor to push out most of the grease. Then rotate until the piston is down far in the bore and put some gas or kerosene in there to thin out the grease. Cycle it again or blow that out with compressed air and whatever is left will burn out, assuming the engine starts!
Junior User
Joined: Oct 2006
Posts: 52
Likes: 0
From: Anaheim, California
They can be stubborn. Get yourself a pry bar about four feet long with a flat end that will engage the teeth on the flywheel. Pull the dust cover down below and find a place to turn the flywheel with the pry bar. Work the engine in both directions. Once you get it to budge just a fraction of an inch your in.
I have used this method on three different engines and with that amount of leverage it will start to move. You may have to modify the end of your prybar by grinding to a shape that will fit between your flywheel and the bellhousing, but it works.
Squido
I have used this method on three different engines and with that amount of leverage it will start to move. You may have to modify the end of your prybar by grinding to a shape that will fit between your flywheel and the bellhousing, but it works.
Squido
Cargo Master
Joined: Sep 2004
Posts: 2,690
Likes: 6
I'd use liquid wrench or PB Blaster first and then diesel or kerosene. They'll all penetrate which is what you want. The diesel and kerosene are more oily than gas but less than oil. I don't see how in the hell grease would work. It just sits there. It won't penetrate into anything.
Elder User
Joined: Oct 2007
Posts: 574
Likes: 0
From: Paragould Ar
I'd use liquid wrench or PB Blaster first and then diesel or kerosene. They'll all penetrate which is what you want. The diesel and kerosene are more oily than gas but less than oil. I don't see how in the hell grease would work. It just sits there. It won't penetrate into anything.