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Is it necessary to depressurize fuel filter on 2004 Trailblazer before changing fuel filter?
Open the gas cap to depresurize. Have a container ready as you may get half a cup of fuel that comes out.
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I have to respectfully disagree. Removing the fuel cap will only depressurize the system if there are no in-line check valves in the pump, filter, or pressure regulator. Since the Trailblazer is a port injected vehicle, it maintains at least 40 psi in the lines while parked to allow for a fast startup. Pull the fuel pump relay and start the truck. After a few seconds the residual fuel pressure will be used up and the engine will stall. There will still be some pressure left, but far less than the 40-80 psi most vehicles run at.
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Do you have to depressurize the fuel system before disconnecting a fuel line?
No, but it is safer if you do.
Do you need to depressurize the fuel system before changing the fuel filter on a 1996 Chevrolet tohoe?
No you do not , just loosen the lines slowly and the pressure will leak off Don't smoke are have a drop light close, cause fuel will run out, but then stop.
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Where are the fuel filters are on a 95 Buick Century?
my 93 lesabre its under the car by the front passenger tire its just up on the firewall the lines will be labeled ---- MAKE SURE YOU DEPRESSURIZE THE FUEL LINE BEFORE SERVICING ----
