Without knowing the vehicle or engine in question, the general answer is that you disconnect and remove one engine and reinstall another in its place. All wiring and hoses which connect the engine to the vehicle would need to be disconnected and marked in some fashion to aid with reconnection, don't rely on memory, there's too much stuff.
Start with purchasing a repair manual for that vehicle.
Replace the Mazda engine.
No, you do not have to remove the engine to replace a radiator hose.No, you do not have to remove the engine to replace a radiator hose.
The Diesel engine
The whole thing my guy
Replace the engine.Replace the engine.
you can but you have to replace gas lines and tank and some sensors
Can you replace your 2000 Camry CE 4-cylinder engine with a 1997 Camry engine?"
yep, though you may have to replace the mounts.
It is a timing chain, and no, you can replace it in the car.
It is designed to last the life of the engine and is normally replace when the engine is overhauled.
I had to replace the engine in my 2001 stratus SE and it ran me 900 dollars.
a trooper engine or a rodao engine