Replacing an Engine
February 6, 2009
If you are contemplating replacing an engine there are few things to consider. First, identify the exact problem with the current engine. Determine if the transmission and starter will need to be replaced. If the engine has been run without oil or water; or if it is smoking excessively then the engine will probably need to be changed out. If the problem is confined to the engine then the transmission may not need to be replaced. However, if the vehicle has an automatic transmission and the engine has been run without water then the transmission may have been damaged as well. This is because the transmission fluid in an automatic transmission is cooled by the radiator also. The items needed to change out an engine include gloves, power tools, an engine hoist, and of course the replacement engine. Once the correct tools have been assembled and the replacement engine is on hand, the old engine is now ready to come out. The first step is to disconnect the battery cables, beginning with the negative cable. Proceed to the next step by taking off the all accessible parts connected to the engine. Be sure to tag each part and note their placement on a piece of paper. Now it’s time to drain the radiator and remove any coolant and heater hoses from the radiator and then remove the radiator. Next remove the ac compressor and accessories. The alternator is removed next by taking out the bolts and disconnecting it from the battery. The power steering pump is unbolted and removed next. At this point it’s time to drain any fluids out of the engine and unbolt the motor mounts. Be sure to check the motor mounts for excessive wear at this time. If you are not changing out the transmission then unbolt it from the engine. Attach the engine to the engine hoist and remove it from the car. The engine may need to be tilted slightly to attain clearance from the firewall. Once the old engine has been removed and stored in a secure location, now is a good time to clean and paint the engine compartment if so desired. The replacement engine is now ready to be installed. Hoist the replacement engine and place it into the engine compartment. Start replacing all removed parts, going in reverse order. Connect the replacement engine to the transmission, being sure to check the fluid levels in the transmission. Replace the oil in the newly installed engine. Once all components have been reattached to the engine, it’s time to crank up the vehicle. Let the engine warm up and now it’s ready for its first test drive. Replacing an engine can be a challenging task but with the proper tools and preparation, it can save money and enable the car owner to enjoy his vehicle for years to come.
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