I'll second that!!! Have used ATF & diesel mix on a few engines to get them to free up. After giving cylinders a good shot I try and put a load on crank pulley by using a jack and socket & breaker bar & let it sit with torque applied to break it free.
-- Edited by dualquadpete on Friday 24th of April 2020 07:08:05 AM
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Some times I wake up GRUMPY, but today I let her sleep in !!!!!!!!BLACKSTOCK Ont.
I'll second that!!! Have used ATF & diesel mix on a few engines to get them to free up. After giving cylinders a good shot I try and put a load on crank pulley by using a jack and socket & breaker bar & let it sit with torque applied to break it free.
Pete, how much time should you allow to let the secret potion do its job before applying a load to try and unstick the engine? Do it immediately?
-- Edited by 68 Grande on Friday 24th of April 2020 11:21:58 AM
Like I said dose up the cylinders, then apply pressure to crank bolt & walk away for 24 hrs You can let the cars weight work on breaker bar & socket with axle stand on bar or use a jack!!! with pressure applied. Not a guarantee it will work 100% of the time, but worth a shot. Did a 57 Olds this way & it broke free.
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Some times I wake up GRUMPY, but today I let her sleep in !!!!!!!!BLACKSTOCK Ont.
I have put a socket on the generator pulley nut to try to roll the engine. Sometimes they move a bit and you could rock it back and forth. I have also removed the starter to pry the ring gear. Time is your friend. Unless its really rusty on the cylinder walls it should free up. I did get one running that sat in a barn for twenty years running after adding diesel fuel and trans fluid to the cylinders. I let it sit for a couple of weeks. If the spark plugs were really rusty when you pulled them out you probably will need to pull the engine apart.
Generator and brackets were robbed....but engine was covered with hood....plugs came out nice and no sign of water/rust....so hopefully it will break free..
I will let the brew "cook"...for 2 weeks......and give it a whirl..
Had a stuck Pontiac 400...years ago......Soaked the rings let it sit.....
Couldn't move it with a breaker bar on the crank.....
I installed a battery.....hit the key....and the starter did the job......
It actually ran pretty good.....after I fussed with it...
Its nice that this thread has been revived. On another forum that I frequent a poster was trying to free up a six cylinder in a military truck. He removed the cylinder head and found one cylinder that was very rusty. To get the piston to move he but some diesel fuel in the cylinder along with a rag soaked with diesel fuel. He lit the rag and let it burn until it burned up the diesel in the cylinder. With the resulting heat buildup he was able to move the piston with a hammer and block of wood. This allowed the engine to be disassembled without any additional damage. Although it needed a sleeve, the engine was able to be saved.
Just a question on earlier points in this thread.
After you apply the diesel/ATF potion when putting a load on to turn the engine do you have to apply the load so that if it breaks free it will turn in the direction of normal rotation? Or does it matter?
