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Old 10-08-2002, 12:29 PM   #1
phillywrx
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2014 Audi SQ5

Default wrx fuel filter change

is this as straight forward as it seems? i am hoping that when i go to disconnect the 2 tubes connected to the old filter that gas doesn't come flying out. is it pressurized? any other tips?
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Old 10-08-2002, 12:33 PM   #2
phillywrx
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ooops. wrong forum.
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Old 10-08-2002, 01:58 PM   #3
Austin
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Default

Yes, it is as straightforward as it seems. It is pressurized, but if you wait a couple hours after turning the car off, all the pressure will bleed off. You can also disconnect the fuel pump and crank the car to suck the pressure out of the fuel system.

And it'll leak fuel when you pull the hoses off the filter. Even when all the pressure is gone, the system is still full of fluid.
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Old 10-08-2002, 02:03 PM   #4
phillywrx
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thanks Austin. appreciate the help.
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Old 10-08-2002, 05:11 PM   #5
vrg3
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Burgundy

Default Also...

A way to ensure that the fuel system is fully depressurized is to disable the fuel pump and then crank the engine for five seconds or so. If it starts, just let it run until it dies and then crank it a little more.

To disable the fuel pump, you can either disconnect the wiring harness from the pump (in my '93 Legacy Turbo that is done by removing the rear seat and taking off the cover that protects the fuel pump) or by disconnecting the fuel pump relay (in the same car, it's on the left side of the dash, way up and against the firewall; it has a green-colored connector).

I don't know exactly how similar our cars are with respect to the fuel pump relay, but I'm pretty sure that the pump's in the same location. On all the Subarus I've owned ('91 Legacy, '93 Legacy x 2, '97 Impreza, '97 Legacy) it's been there.
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Old 10-08-2002, 05:16 PM   #6
phillywrx
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Default Re: Also...

Quote:
Originally posted by vrg3
A way to ensure that the fuel system is fully depressurized is to disable the fuel pump and then crank the engine for five seconds or so. If it starts, just let it run until it dies and then crank it a little more.

To disable the fuel pump, you can either disconnect the wiring harness from the pump (in my '93 Legacy Turbo that is done by removing the rear seat and taking off the cover that protects the fuel pump) or by disconnecting the fuel pump relay (in the same car, it's on the left side of the dash, way up and against the firewall; it has a green-colored connector).

I don't know exactly how similar our cars are with respect to the fuel pump relay, but I'm pretty sure that the pump's in the same location. On all the Subarus I've owned ('91 Legacy, '93 Legacy x 2, '97 Impreza, '97 Legacy) it's been there.
you are right on about the relay. Rocky WRX responded in the maintenance forum with a picture, and it is in fact green. thank you for the response. i thought this thread would die after i admitted that i put it in the wrong forum.

matt
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Old 10-08-2002, 05:25 PM   #7
phillywrx
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Default Re: Also...

Quote:
Originally posted by vrg3
A way to ensure that the fuel system is fully depressurized is to disable the fuel pump and then crank the engine for five seconds or so. If it starts, just let it run until it dies and then crank it a little more.

To disable the fuel pump, you can either disconnect the wiring harness from the pump (in my '93 Legacy Turbo that is done by removing the rear seat and taking off the cover that protects the fuel pump) or by disconnecting the fuel pump relay (in the same car, it's on the left side of the dash, way up and against the firewall; it has a green-colored connector).

I don't know exactly how similar our cars are with respect to the fuel pump relay, but I'm pretty sure that the pump's in the same location. On all the Subarus I've owned ('91 Legacy, '93 Legacy x 2, '97 Impreza, '97 Legacy) it's been there.
you are right on about the relay. Rocky WRX responded in the maintenance forum with a picture, and it is in fact green. thank you for the response. i thought this thread would die after i admitted that i put it in the wrong forum.

matt
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Old 10-08-2002, 09:08 PM   #8
Ski Man
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WR Blue

Cool

Just changed mine last week. Leave it sit overnight and it will not leak more than a drop or 2. Disconnect from casing (one snap tightener), take all area hoses out of positioning brackets, lift filter up to a higher position, disconnect line to engine and use something to prop it up (have a paper towel to catch 1-2 drops), then disconnect line to fuel tank (I had no drops here, but a paper towel is nice in case) and also prop that line up. Remove filter fully from bracket, keep upright and dispose of gas in filter by pouring it carefully back into your tank, take the hose holder bracket off the old filter, install on new filter. Then just reverse process to install.

Easy.
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Old 10-25-2002, 05:57 PM   #9
Surf WRaX
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way stupid question...but where is the fuel filter?
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Old 10-25-2002, 06:28 PM   #10
Austin
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Quote:
Originally posted by Surf WRaX
way stupid question...but where is the fuel filter?
The fuel filter is either a black or silver canister about the size of a softball located on the front inside corner of the front left strut tower in the engine bay.
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Old 10-25-2002, 07:14 PM   #11
JonR
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Another one of them stupid questions...anyone know where the WRX PCV valve is? I looked and looked and can't seem to find where it joins with the crankcase....
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Old 10-25-2002, 07:24 PM   #12
Austin
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Quote:
Originally posted by JonR
Another one of them stupid questions...anyone know where the WRX PCV valve is? I looked and looked and can't seem to find where it joins with the crankcase....
The PCV valve is under the throttle body, a bit to the passenger side.

Look directly down in front of the front passenger corner of the intercooler, and you've found the crank vent. There is a plastic Y piece which connects the crank vent to the PCV valve, and the crank vent to the turbo induction pipe.
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