Question about how to release the fuel system pressure before changing the fuel filter in a vehicle?

i've been doing this for a long time ,you tell me if this is a good idea or not : when reading the instructions they always suggest to release the fuel system pressure before changing your fuel filter this is what i do: i open the gas tank cap and then introduce half way a medium size screw driver to keep the gas tank neck open,is this a good thing to do to keep the fuel system unpressurized or maybe this doesn't make any sense to you,your opinion please,tanks in advanceQuestion about how to release the fuel system pressure before changing the fuel filter in a vehicle?that does not release the fuel pressure. the best way is to remove the fuel pump fuse or relay and then crank the engine over for a few seconds. that will release any pressure so the fuel doesnt spray you in the face when you pop off the fuel line.Question about how to release the fuel system pressure before changing the fuel filter in a vehicle?if it is fuel injected, on the fuel rail near the motor where it splits or near the first injector is a valve.that is where you release the pressure.they recommend the fuel pressure tester to release pressure..but you can use a screw driver and a rag to release it.you wrap the line with the rag and put the screw driver in the valve with the rag covering it so gas does not spray all over. remember the pressure is 14 to 22 lbs so gas is going to shoot outQuestion about how to release the fuel system pressure before changing the fuel filter in a vehicle?If you have a schrader valve type fitting on the fuel rail that's used for attaching a fuel pressure gauge, then press the center pin in to release some pressure with a rag to catch the fuel. If not, then I'd just gradually remove the filter connectors. Wear safety glasses and rubber gloves.Question about how to release the fuel system pressure before changing the fuel filter in a vehicle?What you're doing will not relieve pressure in the fuel line. But unless you're in a diesel, the fuel pressure is nothing to worry about. You can relieve pressure by pulling the fuel pump fuse and running the engine 'till it quits, or you can just put a rag over the fitting so it won't squirt in your eyes, and you'll just get a few tablespoons of gas on your hand.Question about how to release the fuel system pressure before changing the fuel filter in a vehicle?Steven's suggestion is right on.



Also, the fuel pressure at the rail is at least 40 PSI. Not something I would care to catch with a rag as yor skin absorbs gasline very easily. YUM!



The pressure that is to be released is between the pump and injectors, so leaving the fuel cap off only makes you feel better after clicking your heels a few times and ending up in Kansas.