Yes. Many internal combustion engines today can and do run perfectly well on 85% alcohol and require just slight modification to run on 100% alcohol.
No, a diesel is a compression firing engine and a petrol is a spark firing engine. Diesel fuel will not burn in a petrol engine with spark plugs.
to make the vehicle go
Leave Engine Off
no it would make the car break down
Twice
In a petrol engine, the petrol is evaporated before it is burnt, this means it burns better, increasing engine efficiency.
A Petrol engine use petrol that it ignites to cause an explosion in the cylinders, where the diesel engine works by compressing the mix of diesel and air, expose this to heat to make it explode but over a longer time. So a diesel engine has no spark plugs. The diesel needs pressure and heat, while petrol is explosive, will explode. So the two cannot be used together.
It can make the engine seize up, the mechanic parts and components are made to work with the right type of fuel for the engine. Basically, if you put petrol into a diesel engine, it would run for about 10 minutes then die. Then you would need a new engine. Diesel fuel is oily and provides lubrication for the pumps and injectors. Petrol does not provide the lubrication, so the pumps and injectors will be damaged. It is unlikely that the engine will run at all if all petrol is used. Diesels are compression ignition engines. The fuel ignites as soon as it is injected into hot air. petrol needs a spark.
The best way to make a turbo engine quiet is to install a higher quality exhaust system. The engine compartment can also be lined with sound absorbent materials.
The petrol tank on any vehicle does not actually do any work at all, it's only function is to store the petrol that your vehicles engine runs on, the part that does the work is the petrol ( or fuel pump as it's also called) pump that is located in many different locations depending on make and model (on most motorcycles there is not even a fuel pump, petrol is simply gravity fed to the engine) on some it's in the petrol tank, and runs on electricity, on others it's in the petrol line somewhere between the tank and the engine (on most cars it's on the side of the block and runs off an extra lobe on the camshaft or a gear run off the crankshaft) The pumps job is of course to pump the petrol from the holding tank to the engine at a pressure that the engine needs it fed to it.
If you have a diesel engine and fill it with petrol, it can explode. The petrol is gasoline with added chemicals to make it explode by the ignition made by the spark plug, causing the cylinders to move, that then powers your car. The diesel engine works differently, in that it has a heat plug that ensures heat in the chamber, the reverse movement of the cylinder cause an increase in pressure until it reaches the point where combustion takes place. Diesel on a petrol engine may wreck all the electronics, valves - because it will not ignite. The reason for preferring diesel engines on a boat is just that the diesel vapor needs pressure and heat to explode, not just a tiny spark.
No. The engine has to be modified first.