Dirty fuel injectors or vacuum leaks can cause a car to hesitate when the gas is pressed. It can also be caused by low fuel pressure.
The problem can sometimes be diagnosed using a scan tool. The tool checks for engine misfires and fuel readings.
If the owner suspects a vacuum leak, they should check to ensure all hoses are connected tightly and are free of holes and cracks.
The repairs the will be required depend on the issue at hand. For instance, it a vacuum leak is occurring, a hose may need replaced. If there is a lack of fuel pressure, the injectors or fuel filter may need cleaned or replaced.Learn More
A car can hesitate or stall while going uphill for a number of reasons, but typically the problem occurs when the engine's valves and rings are worn. Because driving uphill puts the engine under additional stress, less compression is dispensed, which weakens the engine over time. Stalling can also occur when the engine's sensor no longer works.Full Answer >
If an engine stalls upon acceleration, one likely cause is a dirty fuel filter. Not replacing the filter according to the manufacturer's recommendation allows debris from fuel to build up and plug it. This causes the car to operate on a lean fuel supply and render it unable to meet the demand of pressing the accelerator pedal, according to Carsut.Full Answer >
Restricted fuel delivery and malfunctioning spark plugs are the most common reasons for cars to hesitate during acceleration. The first step to identifying the cause of this is to find out if the car is fuel-injected or if it has a carburetor. Fuel-injected cars and cars with carburetors deliver fuel differently, so there are different ways to diagnose and fix problems with acceleration.Full Answer >
A loose or slipping engine belt or a misaligned accessory drive pulley could cause a car to squeal upon acceleration. Engine belts and drive pulleys are used to power the water pump, air-conditioning compressor and the alternator of an automobile.Full Answer >