- Troubleshooting Car Engine Problems - Auto / Car Engine Repair
The Case of the Stuck Engine
All restorers have come across an engine that has seized up from lack of use. You'll hear many stories of how to break such an engine free. The trick is to break it free without "breaking the engine." We've even seen, on a rare occasion, a stuck motor revived and run fine.
First, pull all the spark plugs. Our secret recipe formula elixir is 1 part Marvel Mystery Oil and 1 part automatic transmission fluid. Fill each cylinder with this mixture and let it sit for a couple weeks. Using a large breaker bar and socket on the end of the crankshaft, try to turn the engine ever so slightly each way. Each time turn a little more, until you've turned the engine over. If this doesn't work, remove the cylinder head.