How can I improve my bad gas mileage?
Drive More Efficiently
- Go Easy on the Pedal. Speeding, braking, and rapid acceleration waste gas.
- Slow Down. Gas mileage efficiency tends to decrease above 50 miles per hour.
- Leave Extras at Home.
- Use Cruise Control (When Appropriate)
- Turn off the Car.
- Check Tire Pressure.
- Replace Spark Plugs.
- Check the Alignment.
Can running lean cause low mpg?
It’s very possible to run lean and get poor fuel economy. For many engines, running slightly lean will improve fuel economy, but beyond that power output begins to fall off faster than fuel consumption, so fuel economy suffers.
What causes hard starting on a diesel engine?
Use a vacuum gage to perform a test. Low compression in your diesel engine will prevent heat from being produced to ignite fuel and causes hard starting. This is usually a problem with high mileage or older diesel vehicles. To troubleshoot whether low compression is the problem or not, perform a cold engine compression test.
Can a weak fuel pump cause a car to not start?
A weak fuel pump may still pump fuel, but the vehicle may experience difficulty starting from the lack of pressure. A weakened fuel pump can cause the vehicle to take more cranks to start than normal, and in more serious cases may even cause the vehicle to require multiple turns of the key before it will start.
What to do if your car engine is hard to start?
Unfortunately, there is no easy solution that can work for all, hard starting engine cases. But, paying attention early, may steer you down the right path, to a easy repair. If the engine takes more than 4 seconds to start, there is a problem. There are a number of issues that will make a car hard to start.
Can a faulty PCM cause low fuel mileage?
Since the fuel pressure regulator is given specific air/fuel mixture directions from the PCM, it should always maintain the proper mixture. A faulty fuel pressure regulator can also be to blame for a sudden decrease in fuel mileage. These symptoms can also occur with a plugged fuel filter, failing fuel pump, or faulty PCM.