How to check fuel pressure. (Done on 2016 Chevy Equinox 2.4L) Newer cars like this one have a built in valve similar to the one used to fill your tires with air. Other cars require you to tap into the fuel line itself near the fuel rail. With the gauge fully secured, turn the key. Make sure the pressure is at least 40 psi and doesn’t drop more than 5 psi per minute. | The Car Baddie

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