There's a few possible causes which include blocked air filter or fuel filter as well as a clogged-up fuel injector.
Also consider an air leak - air being drawn into the injection system somewhere (or via a gasket on the inlet manifold). To check for an air leak, start the car and spray a light penetrating oil such as WD40 around the inlet manifold and pipework (including flexible rubber connectors) on the fuel system.
If air is being drawn in somewhere it shouldn't be, you may well get a cloud of whitish-blue smoke from the exhaust as the penetrating oil is also sucked in and burnt
the car starts when i put it in reverse or drive it makes a big noise in the rear end like a grinding loud noise
A grinding noise in a car with a rear axle could point to bearing/differential trouble. The noise - when moving - could also be caused by worn brake pads. The noise is actually caused by metal to metal contact with the brake rotor. Your first step is to identify what is causing the grinding noise - so, first get a mechanic to look/listen at your car. The more you drive it with that grinding noise the more likely you are to cause serious and expensive damage
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