Properly inflated tires usually get better fuel efficiency compared to poorly inflated tires.Ĭhanging temperatures can affect the inflation of your tires." Keeping the proper air pressure in your tires provides a comfortable ride for you and your passengers. The big auto insurance company AllState has some good reasons why to check your pressure Top of this, 1.4% of people don't even realise that their tyres need air." Pressure is for their vehicle with18-24 year olds being the key culprits. "According to the poll, 58% of people do not know what the correct tyre Be sure to pinch off the fuel return line or most of the fuel will be returned to the fuel tank.Bloomberg news recently talked bout this. Run the fuel pump by installing a jumper wire into diagnostic connector terminals D1-5 and D1-6. Fuel pump flow rate can be done by connecting one end of an old A/C gauge hose to the fuel test port on the fuel rail and inserting the other end of the hose into a container of at least 1 liter capacity. If the fuel pump does not pump adequately, then inspect the fuel system for a plugged fuel filter or fuel pump inlet filter (sock). A good fuel pump will deliver at least 1 liter of fuel per minute with the fuel return line pinched off. 4a - Inspect the fuel supply and return lines/hoses for kinks or restricting bends.If the pressure is not to specification, check the following before replacing the fuel pressure regulator:. Pressure should be approxi- mately 214 kPa (31 psi) with the vacuum hose connected to the pressure regulator and 269 kPa (39 psi) with the vacuum hose removed from the pressure regulator. Connect a 0-414 kPa (0-60 psi) fuel pressure gauge to the pressure fitting on the fuel rail (Fig.Remove the cap from the pressure test port in the fuel rail.If fuel pressure is above specifications, inspect the fuel return line for kinks and blockage.If fuel pressure rises replace fuel pressure regulator. If fuel pressure remains low, inspect the fuel supply line, fuel filter, and fuel rail inlet for blockage. If fuel pressure is low, momentarily pinch shut the hose section of the fuel return line.CAUTION: Fuel pressure will rise to as much as 655 kPa (95 psi) when the fuel return tine is pinched shut, shut engine down immediately after pinching oft fuel return line.
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