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How to unlock a frozen engine

Old 04-01-2010, 03:25 AM
Worf's Avatar
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Join Date: Mar 2010
Location: United States
Posts: 862
Default How to unlock a frozen engine

Step 1. Remove all spark plugs

Step 2. Fill the cylinders with Diesel fuel put plugs back in

Step 3. Let it sit for about 2 weeks.

Step 4. Take out the plugs, using the crank pulley nut attempt to manually turn the engine over. If it dosnt move put the sparkplugs back in a try leaving it be for another week.

Step 5. When you do get it moving freely turn it over by hand until you have most of the diesel out of the cylinders.

Step 6. Install new spark plugs, change all the fluids and a new strong battery. Add a little fuel in the carb and see if it starts on its own.

If the engine started then you are fine, but if it didnt start or even try then there is something else wrong with the engine.

If the engine is running, you will notice it's may not be running real smooth, and is blowing a some blue smoke out the exhaust. This is normal, unless it keeps smoking after all the diesel has been burned out of the engine.

Last edited by Worf; 04-08-2010 at 03:45 PM.
Old 08-24-2012, 03:57 AM
Join Date: Jul 2012
Posts: 79

The information which is been provide is very good and such steps is an quite very helpful.
Old 09-09-2012, 11:31 PM
Join Date: Aug 2012
Posts: 45

Well the step-by-step guide for unlocking an engine is quite helpful for those who spends $'s on it to get the issue fixed. Maybe by this guide some of them can resolve their issue's if they have some knowledge about it. Instead of just driving the car
Old 11-20-2012, 04:37 AM
Join Date: Nov 2012
Posts: 3

The information which is been provide is very good and such steps is an quite very helpful.
Old 11-20-2012, 07:45 AM
In2Trux's Avatar
Join Date: Feb 2010
Location: Northern Ont
Posts: 1,743

Great How-2-Tip
Those steps are good for storing an engine too. Thanks Worf

BTW (Holy thread resurrection )
Old 11-20-2012, 08:13 AM
RustyFordLover's Avatar
Senior Member
Join Date: Jul 2012
Location: Fairbanks Alaska
Posts: 492

There is one thing that's works even better. Instead of putting Diesel in the cylinders, fill them up with marvels mystery oil. it soaks into the rings and all that, and cleans it all out, I had a dump truck that was locked up so tight, that I tried dragging it around with a 988 and the back tires just skidded all. Fill it up with MMO, and let it sit over night, next day, got it out, and it fired up. After putting on a new carb, it runs great, and doesn't burn any oil.
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