0
Is it necessary to depressurize fuel filter on 2004 Trailblazer before changing fuel filter?
Wiki User
∙ 13y ago
Open the gas cap to depresurize. Have a container ready as you may get half a cup of fuel that comes out.
www.trailvoy.com - All the answers for your trailblazer by true enthusiasts!
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.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
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.
Should a person change the dirt in the pot before planting a new plant?
It depends on what happened to the old plant. Changing the soil shouldn't hurt, but it might not be necessary.
How many kilometer before changing the timing belt of Toyota Innova?
It usually does not matter how many kilometers are travelled before changing the timing belt on the Toyota Innova. A timing belt is left alone until problems arise. This is a very expensive repair and not necessary unless the engine has seized up.
Why is it necessary to warm the thermometer before placing it into the solutions?
The thermometer reading will change from reading the solution temperature.
Do you do a wheel alignment before or after changing rotors?
after changing rotors
Is it necessary to change coils when you change spark plugs in acura tl 1999?
No, as long as they were working good before you changed plugs and did not break them while changing the plugs they will work fine.
How many kilometres before the serpentine belt needs changing?
Depends on many factors. Inspect the belt for cracks & wear and replace it as necessary. It should last at least 100,000 miles, but it may not.
How many miles before changing timing belt on 1999 ford escort?
120,000 miles , inspect and replace if necessary ( but I see another person has answered that their belt broke at 110,000 miles )
Where is the O2 sensor on the 03 Chevy Trailblazer and is there any prep or post work you need to do before changing it?
Ther are two oxygen sensors on the system. One is located at the exhaust manifold and the other just after the Cat. There are several reasons why you may get these codes and at $100 per sensor you do not want to be wrong. If you are destroying a sensor then you should find out why before replacing it.
Why is it necessary to dry the ice before adding to the water?
It is not necessary.
Is it necessary to be in a relationship before marriage?
Not necessary but extremley recommended
