It may need fuel, or it may need oil or spark plugs.
Not really sure what you're getting at. If your lawnmower engine is a 2-stroke then you need a mixture of oil and gas to run it.
Yitou can. But its not recommended. It wont run right. Stick with the manufacturers recommended weight.
You can run an engine in/out of a car without a transmission. Car wont move and engine wont be mounted properly. So i suggest not to run an engine without a transmission unless you know what you are doing.
You adjust the run and idle speed with the governor wire...loosen the nut and adjust it.
no a lawnmower engine is too big try a weedwaker engine
yes. In order for the engine to run, it needs both O2 and gas. If it doesnt get one or the other, it wont run
because it's been overheated and damaged.
No, normally weedeater gas has oil mixed in with it. This will gunk up the engine and cause the spark plug to fail.
Depends on how many it was designed to run with, for example a small motorcycle engine or lawnmower engine can have just 1 cylinder, however a car engine with a fault might not have all cylinders burning efficiently, and will still run on less than designed to, but nit well or efficiently
What kind of engine? lawnmower, car.
Obviously NOT unless your god
about 157hp